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2015 ISSUE 6

2015 ISSUE 6

1

O v e r 1 0 0 Y e a r s o f E x p e r i e n c e

New ACDelco Garage

Series Offers Product

Info, Service Tips

ACDelco is increasing its social presence on the Internet with an informative, and entertaining, new video series called “ACDelco Garage.”

The video series, which appears on ACDelco’s YouTube channel and on ACDelco

Web sites, features interesting, smartly scripted vignettes about various products, service and maintenance tips, vehicle attributes and more.

The first video released in the series, “How to Winterize Your Car: Fall Car

Care,” is just over three minutes and offers a look at how service centers and their customers can prepare for winter. In the episode, two hosts explain the importance of winterizing vehicle components such as tires and windshield wipers as well as the importance of packing warm clothes, a flashlight and other items in case of emergency.

It stresses the importance of preparing a vehicle for winter with the help of

ACDelco, all with a humorous delivery. Like most of the additional videos planned for the new series, the “Winterize” episode is aimed at car owners and is an excellent reference for your customers.

In total, the ACDelco Garage web series will release 15-20 episodes covering various topics to highlight the outstanding quality and service ACDelco delivers.

WHAT’S INSIDE

IN THE NEWS

Simplified ACDelco brake lineup....................................

pg 2

2016 Chevy and GMC HD truck new features..........

pg 8

Vintage Nova with a modern heart................................

pg 15

the service bay

New engine oil pressure sensor job aid.........................

Diesel exhaust fluid basics................................................

pg 3 pg 6

New Service Information features.................................

pg 10

training

Master technician earns medallions..............................

New battery and engine electrical seminars...............

Inside the new Detroit training center..........................

Training schedule...............................................................

pg 3 pg 4 pg 12 pg 16

product

New GM OE engine mounts............................................

pg 9

New Professional starters and alternators..................

pg 15

running the business

Tech2Win tutorials simply software installs................

pg 5

GM ASEP students in social media challenge..............

pg 11

ACDelco releases new CONNECTION catalog.........

pg 14

tech tips

Oil leaks in cold temperatures.........................................

Body harness short electrical conditions.....................

pg 8 pg 9

Diagnosing high-speed LAN concerns..........................

pg 13

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2015 ISSUE 6

ACDelco Brake Lineup

Simplified Using the Same

Quality Products, Coverage

To help installers and consumers better understand the choices in its good, better and best tiers, ACDelco is simplifying the branding of its brake offerings. Now,

ACDelco’s “better” line includes all makes/all models in its aftermarket brake tier under the name “Professional.”

The Professional brake line provides premium aftermarket brake coverage for 95 percent of all domestic and import vehicles in North America. The simpler naming strategy also brings clarity to consumers considering brake options at repair facilities. ACDelco’s brake tiers now include:

GOOD

The ACDelco Advantage tier consists of more than 2,200 SKUs and offers aftermarket pads, shoes, drums and rotors for GM and non-GM makes and models. Advantage brake friction and drums/rotors feature the fit, form and function of premium brakes at a value price. They provide a 12-month/ unlimited miles warranty for consumers seeking

ACDelco quality at a more economical price.

BETTER

The ACDelco Professional line is the premium aftermarket offering for

GM and non-GM makes and models. It includes more than 13,000 SKUs and offers pads, shoes, drums, rotors, cables, hardware kits, hoses, wheel cylinders, master cylinders, and remanufactured calipers and brake boosters.

Professional pads and shoes carry a limited lifetime warranty for wear-out, and other Professional brake products are warranted for

12 months/unlimited miles.

BEST

The ACDelco GM Original Equipment line includes more than 5,400 SKUs and offers pads, shoes, drums, rotors with exclusive Duralife™ technology, hoses, wheel cylinders, master cylinders, exclusive ABS modules, calipers, cables and exclusive brake pipe service kits. GM OE brake products are computer developed or designed, dyno tested, tested on the vehicle and offer a 12-month/12,000-mile warranty.

ACDelco brake rotors with exclusive Duralife™ technology feature a hardened and strengthened surface to reduce corrosion, provide long-lasting stopping power and extend brake rotor life. Another technology exclusive to ACDelco, GM OE Coulomb friction-damped disc brakes, feature a thin layer embedded in the rotor to absorb vibrations and mute squeal.

All ACDelco brake products installed by an ACDelco

Professional Service Center or Key Fleet program participant are covered by a 24-month/24,000-mile warranty.

ACDelco also offers police-specific Professional pads and fully coated, damped iron rotors with specific vane configurations.

New Professional Severe Duty rotors provide improved brake pedal feel and up to a 30-percent improvement in pad wear based on testing. There are also ACDelco brake applications for school buses, medium-duty trucks and air disc brakes for

Class 8 trucks. New Service Vehicle calipers with silicone boots cover full-size vans from

Chevrolet, GMC, Ford and Dodge.

Explaining to consumers why brakes need replacing can be difficult. Through the acdelco1store

(acdelco1store.com), ACDelco offers service centers tools – such as brake pad wear gauges, rotor cutaways and countertop braking system interactive displays – to educate customers on how brakes work and replacement options.

Master Technician Earns Specialist Medallions

2015 ISSUE 6

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THE SERVICE BAY

New Engine Oil Pressure

Sensor Replacement Job Aid at the acdelco1store

ACDelco’s Andre France (left) congratulates Hal Ginsburg.

Hal Ginsburg knows the importance of education and training. The automotive technology instructor, who is an adjunct professor at the College of the Canyons in Santa Clarita, Calif., also works at an

ACDelco service center.

awarded with a custom-designed “Specialist” medallion by an ACDelco representative and a plaque to display all medallions earned.

Ginsburg has earned six ASE certificates, but he still feels the need to continue training.

“I cannot convey in words how much,

A qualified Master Technician at Hank’s Tire

Service, an ACDelco Blue Level Professional

Service Center in Woodland, Calif., Ginsburg has been taking advantage of the ACDelco training made available to him.

“Any technician or shop owner who does not take full advantage of what

ACDelco offers for free is selling themselves short.” - Hal Ginsburg

Now he’s being recognized through the

ACDelco Technician Training Recognition

Program, which encourages technicians to increase their knowledge and skills in each of the core Automotive Service Excellence

(ASE) areas. The ASE areas are represented on a training path that combines approximately 40 hours of web-based and face-to-face classroom training courses.

There are currently more than 700 courses available in the technical training portfolio, representing automotive technologies such as Alternative Propulsion, Engine

Repair, Automatic Transmission/Transaxle,

Suspension and Steering, Brakes,

Electrical and Electronics, Heating and

Air Conditioning, Engine Performance,

Light-Duty Diesel and Body Electrical and

Communication.

Upon completing a path, technicians are during the past several decades, I have enjoyed taking the classes that ACDelco has provided for automotive technicians,”

Ginsburg says. “Basic fundamentals are the cornerstones of any education, but today’s technicians and those of the future must be exposed to the ever-increasing array of future technologies.”

Ginsburg is not new to ACDelco training. He has taken numerous classes ranging from

ILTs, to seminars and web-based classes since 1968.

“Any technician or shop owner who does not take full advantage of what ACDelco offers for free is selling themselves short,” he says.

“Every day, I want to learn something new, to continue learning, teaching and giving back”.

ACDelco has released a new Engine Oil Pressure

Sensor Replacement job aid for 1997-2003 Chevrolet

Corvettes (VIN G) and the

2003 Chevrolet Corvette

Z06 (VIN S) equipped with the 5.7L V-8 engine. It’s an easy-to-use, single-sheet job aid that reviews the proper procedures to follow when replacing the engine oil pressure sensor.

It’s critical for proper operation of the new oil pressure sensor to check for oil contamination of the terminals, connector and harness. Oil in the connector may make its way into the sensor though the vent hole, where it will eventually damage the circuit board of the sensor.

The job aid covers the necessary steps to follow to prevent early failure of the oil pressure sensor from fluid contamination.

The Engine Oil Pressure

Sensor Replacement job aid can be downloaded at the acdelco1store. Look for document #01-SS-0203-15E under Sell Sheets.

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2015 ISSUE 6

New Seminars Provide a Jump Start on

Battery and Engine Electrical Training

Should the battery be replaced or recharged? Is it a bad battery or the generator? These are common questions when dealing with electrical repairs that often have uncommon answers.

Diagnosing electrical conditions may lead to the replacement of the battery, but there are also many other components that play a role in the performance of a vehicle’s electrical system.

ACDelco has recently introduced two new service training seminars — Battery Marketer Seminar “Boost Your Battery

Knowhow” (S-EL06-71.01SEM) and Engine Electrical “Is

Starting and Charging Getting You Cranky?” (S-EL06-

72.01SEM) — that cover battery operation and performance as well as engine electrical diagnosis.

The threehour seminars include a variety of resources and case studies that review several service issues, covering diagnostic tips, typical causes and how to properly diagnose and repair the concerns. The case studies provide a descriptive investigation of a real-world issue along with the details needed to determine the fundamental reasons for a cause and correction.

Boost Your Battery Know how

Vehicle operation starts with the battery. In the seminar, the different ways battery performance is affected by other components is presented along with how to diagnose the overall condition of the battery. In addition, the right and wrong ways to test and charge different types of batteries are covered.

Battery basics reviewed in the seminar include:

• Battery safety – best practices for moving and storing batteries, and the effects of time and temperature on a battery charge

•

•

Battery overview – different types of batteries, battery construction, battery specifications (Reserve Capacity –

RC vs. Cold Cranking Amps – CCA) and terminal designs

Battery inspection, testing and charging – insulators help protect the battery from vibrations and excessive temperatures, checking the battery’s state-of-charge, and correct and incorrect battery testing.

Battery insulators help reduce excessive temperatures and vibration.

A parasitic load refers to the electrical current drawn from the battery by vehicle systems when the engine is off. The seminar covers tips on parasitic load testing using a Digital Multimeter

(DMM) to help in diagnosing battery drain concerns. When the vehicle has unacceptable amounts of parasitic current drain, removing each fuse one at a time will help identify the circuit causing the drain.

The online battery catalog features a number of links providing related battery information.

The battery information resources available through ACDelco are highlighted in the seminar as well. For example, the convenient battery sell sheets provide features, benefits and specifications for ACDelco batteries. Plus, the online battery catalog is a useful tool that not only features easy-to-use search functions, but also has helpful information on charging, testing, safety, recycling and jump-starting batteries.

Is Starting and Charging Getting You Cranky?

The engine electrical seminar covers basic battery, starting and charging system components, operation and testing along with an introduction to several new technologies and how to test and diagnose these systems. Topics include dealing with battery management systems, how a defective battery can cause communication U-codes and drivability complaints.

The topic areas include:

•

Battery types

•

•

Basic battery operation during charging and discharging

Safe handling practices

•

•

•

•

•

Starting system function and operation

Diagnosing starting system malfunctions

Charging system function and operation

Diagnosing charging system malfunctions

Properly testing components.

The seminar also covers the recent addition of stop/start technology that is used on several late model vehicles, such as the 2014 Chevrolet Malibu and 2015 Chevrolet Impala.

This new technology requires an auxiliary battery to support accessory loads while the engine is off. In these stop/start applications, the battery is a small Absorbent Glass Mat (AGM) battery with a rating of 155 CCA and 12 RC.

2015 ISSUE 6

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The auxiliary battery is electrically isolated using a relay, or battery isolator. When the engine is running, the auxiliary battery relay (isolator) closes, which allows the generator to charge the auxiliary battery. The battery isolator is designed to protect the primary battery from excessive discharge while allowing the auxiliary battery to supply non-essential loads.

ACDelco’s auxiliary battery is used in stop/start applications.

ACDelco Training

To learn when the Battery Marketer Seminar “Boost Your

Battery Knowhow” and the Engine Electrical Seminar “Is

Starting and Charging Getting You Cranky?” will be scheduled in your area, contact your local ACDelco distributor.

To enroll in other ACDelco training courses, go to www.acdelcotechconnect.com

and click the Training tab.

RUNNING THE BUSINESS

Tech2Win Tutorials Simplify Software Installation and Updates for Independent Repair Shops

ACDelco’s popular Tech2Win tutorials help independent repair shops easily utilize Tech2 diagnostic software from a Windows PC.

Learn how to install or update your Tech2Win in just minutes.

The Tech2Win Install tutorial guides a technician through the software download. (Tech2Win requires an ISO 22900 PDU APO compliant device.) The software then uses a set-up wizard to prompt the user through the entire process, including the selection of a diagnostic tool, application geography and license agreement before the installation is complete.

The tutorial for updating Tech2Win software on your PC or laptop requires a software download while Tech2Win runs in the background. Technicians are prompted to confirm the latest software available and download the most recent version, which resets their lease agreement.

Visit gmtis2webhowto.com to view these and the full suite of

TIS2Web video tutorials – available at no charge.

GMSi and TIS2Web software applications are available via a web-based subscription service. TIS2Web software delivers GM vehicle calibrations, Global Diagnostic System (GDS2) and Tech2

Scan Tool Diagnostic Software required to diagnose GM vehicles.

For more information regarding TIS2Web, go to acdelcotechconnect.com or log on at acdelcotds.com.

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2015 ISSUE 6

Diesel Exhaust Fluid Basics

The Duramax diesel engine available on 2011-2016 GM full-size trucks and vans requires injection of Diesel Exhaust

Fluid (DEF) as an integral part of the exhaust after-treatment process that reduces emissions. DEF is a colorless, clear solution of water and nitrogen-based urea product that has

32.5 percent urea by weight. DEF is naturally occurring and biodegradable. However, it is slightly alkaline, which means it’s corrosive to metals.

mileage decreases without a DEF refill. The vehicle’s current

DEF warning level is displayed on the scan tool as Reductant

Level Warning Indicator Command Level 1 through Level 9. If the vehicle is not in any warning strategy, it will be displayed as

None.

The Duramax diesel engine exhaust after-treatment system reduces oxides of nitrogen (NOx) using a Selective Catalyst

Reduction (SCR) system, a DEF injection system, and two

NOx sensors and smart module assemblies. SCR technology permits NOx reduction to occur in an oxidizing atmosphere. It’s called selective because it uses ammonia to reduce NOx levels as a reductant within a catalyst system. The reducing agent is automotive-grade urea, or DEF, that reacts with NOx to convert the pollutants into nitrogen, water and trace amounts of carbon dioxide. The urea is quickly hydrolyzed to produce oxidizing ammonia.

The Engine Control Module (ECM) controls the DEF delivery system based on engine NOx emission levels and NOx sensor feedback. The injected DEF mixes with the exhaust gas before contacting the SCR system.

DEF Warning Messages

An adequate supply of DEF is critical for the reduction of

NOx levels and to maintain proper after-treatment system operation. A series of prompts and warnings are initiated when the DEF level falls below a calibrated value to ensure the vehicle remains compliant to emission regulations.

DEF levels are indicated on the DIC.

The DEF messages displayed on the DIC depend on the operating conditions of the engine. These messages include:

• Service Exhaust Fluid System (Tamper) – Displays when a Diagnostic Trouble Code (DTC) sets related to the DEF

• system that is interpreted as tampering with the system.

Service Emission System (Not-Tamper) – Displays when a

DTC sets related to the DEF system that is interpreted as an Emission Control fault.

•

•

Exhaust Fluid Quality Poor – Displays when the exhaust fluid is of poor quality or DEF related hardware reflects poor quality.

Exhaust Fluid Range X MI (KM) – Displays when the

DEF tank has a range of 1,000 miles (1,609 km) or less remaining. The DEF mileage countdown may not match the actual mileage the vehicle is traveling.

If a combination of the above conditions exists simultaneously on a vehicle, the order of repair must be followed by using the

DIC messages as the guide to what needs to be repaired first.

The DIC will always display the correct order of repair.

The ECM monitors the DEF level and consumption rate in order to calculate an estimated range in miles remaining until the

DEF reservoir is empty. Typically, DEF warnings are displayed on the Driver Information Center (DIC) beginning once the estimated mileage falls below 1,000 miles. Once initiated, DEF warnings grow increasingly more serious as the remaining

For example, if a tamper condition and a poor quality condition exist together, the DIC will display “Service Exhaust Fluid

System” until the tamper condition is corrected. It will then display “Exhaust Fluid Quality Poor,” which will need to be corrected next.

Continued on next page...

When diagnosing emission conditions, check for:

•

Aftermarket air cleaners

•

•

Diesel Airflow Leak Equivalency Ratio and DTC P0101

Incorrect calibrations

•

•

•

Exhaust leaks

Charge air cooler system leaks

DEF contamination.

2015 ISSUE 6

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A: Turbocharger Downpipe

1: NOx sensor number 1

2: Exhaust Gas Temperature (EGT) sensor 1

3: Hydrocarbon (HC) injector

B: Diesel Oxidation Catalyst (DOC)

4: Exhaust Gas Temperature (EGT) sensor 2

5: Diesel Exhaust Fluid (DEF) Reductant injector

C: Selective Catalyst Reduction (SCR)

6: NOx sensor number 2

7: Exhaust Gas Temperature (EGT) sensor 3

D: Diesel Particulate Filter (DPF)

8: Exhaust Gas Temperature (EGT) sensor 4

Frozen Tank Status

In operating temperatures of 15° F or less, the “Exhaust Fluid

Range” message may display on the DIC even though the DEF fluid has been filled. This may be caused by frozen DEF. DEF behaves like water and will freeze at 12° F.

When the DEF is frozen, the level sensor cannot determine the fluid level in the tank. If this occurs, the logic of the ECM will assume a default fluid level. As a result, there is a possibility the “Exhaust Fluid Range” message can set with the range from approximately 1,000 miles to less than 300 miles, even though the tank is full.

This is an operating characteristic of the system. When in frozen tank status, refill detections are not allowed until the warning strategy reaches the point at which the distance remaining is less than 300 miles. The refill detection is dependent on the DEF thawing enough that the level sensor pins can be read.

DEF Tank Filling Instructions

The capacity of the DEF tank is 5.3 gallons. Since DEF behaves like water, it will freeze and expand. This does not normally cause a problem if the DEF tank is not overfilled. Adding more than the 5.3 gallon usable capacity may not allow for DEF expansion when frozen.

DEF tank capacity is 5.3 gallons.

Use the ACDelco DEF nozzle when adding DEF to make it easier to fill the DEF tank. The nozzle reduces the potential for spilling DEF. It’s available in two sizes: 1 gallon – P/N 10-424 and 2.5 gallons – P/N 10-425.

To maximize driving range and to prevent overfilling the tank, the tank should not be filled until the “Exhaust Fluid Range:

1,000 miles (approximate)” message appears on the DIC. At this point, up to 3.5 gallons of DEF may be added. When fluid initially reaches the top of the fill pipe, stop filling and do not force additional fluid into the tank.

DEF is available from ACDelco in individual packages and in bulk:

SIZE

1-GALLON

2.5-GALLON

55-GALLON

330-GALLON

QUANTITY

4-PACK

2-PACK

DRUM

DRUM

PART NUMBER

10-4022

10-4023

10-4026

10-4027

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2015 ISSUE 6

TECH TIPS

ACDelco technical tips provide repair information about specific conditions on a variety of vehicles. If you have a tough or unusual service repair, the

Diagnostic Hotline can help.

Call 1-800-825-5886, prompt

#2, from 8 a.m. to 8 p.m. ET

Monday–Friday, to speak with a technical expert with the latest

OEM information.

PRODUCT INFO

For free technical assistance and product information regarding specific ACDelco products, contact these toll-free information hotlines staffed by ASE-certified technicians:

Brakes

1-888-701-6169 (prompt #1)

Chassis & ReadyStruts

1-800-270-2124

Clutches

1-888-725-8625

Lift Supports

1-800-790-5438

Shocks

1-877-466-7752

Starters & Alternators (New)

1-800-854-0076

Starters & Alternators (Reman)

1-800-228-9672

Steering

1-855-451-1212

Wiper Blades

1-800-810-7096

Oil Leak After Extended Driving in Cold Temperatures

2010-2013 Chevrolet Malibu; 2010-2014 Buick LaCrosse, Chevrolet Equinox, GMC Terrain; 2011-2014 Buick Regal;

2012-2014 Buick Verano; 2013-2014 Chevrolet Captiva Sport; equipped with the 2.4L engine (RPOs LAF, LEA, LUK)

An engine oil leak may appear on these models when driving in extremely cold ambient temperatures of 0° F/-17° C or colder. There may be a single “pop” noise heard right before the oil leak started. The oil leak, at the rear main oil seal of the engine, may be the result of a frozen

PCV system and excessive crankcase pressure.

Determine if the oil leak is the result of a frozen PCV system by inspecting the PCV system, dipstick, and engine oil fill cap for signs of ice, moisture or sludge build up.

If a leaking rear main oil seal is found in warmer climates, this information does not apply. If a frozen PCV system is found, follow these steps:

Check for a leaking rear main oil seal.

1. Check for proper thermostat operation.

2. Remove the cam cover, inspect the PCV baffle inside, and replace the cam cover if obvious sludge buildup is present.

3. Clean any ice/sludge/water/carbon out of the PCV pipes/hoses, the

PCV nipple on the cam cover, the

PCV orifice between the #2 and #3 intake runners (use a 1/16 inch drill bit), PCV orifice in the head and the throttle body. Also inspect the related

PCV hoses/connections for potential damage.

4. After allowing the engine to idle at operating temperature for at least 15 minutes, turn off the engine and drain the engine oil for at least 15 minutes

Clean the PCV orifice (arrow) between the #2 and #3 intake runners using a 1/16-nch drill bit.

to remove all oil and condensation/ water from the crankcase.

PCV passage (arrow) in the cylinder head

5. Repair any oil leaks that were induced as a result of the frozen PCV system and excessive crankcase pressure.

in the news

2016 Chevy and GMC Heavy Duty Trucks to Offer Fifth-Wheel Hitch Package, Digital Steering Assist

The 2016 Chevrolet Silverado and GMC Sierra

2500HD/3500HD trucks offer a number of new and enhanced features, with new Digital Steering Assist and a factoryinstalled fifth-wheel/gooseneck hitch package topping the list for most customers.

Digital Steering Assist power steering on some double cab and crew cab models helps make hauling and trailering easier and more confident, with electronic controls that enhance road holding and stability on the highway – particularly on crowned roads – regardless of whether the truck is loaded. It also offers greater responsiveness and an improved steering feel.

Continued on next page...

2015 ISSUE 6

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Body Harness Short Electrical Conditions

2004-2012 Chevrolet Malibu, Malibu Maxx; 2005-2010 Pontiac G6; and 2007-2009 Saturn AURA

On the affected vehicles, there may be a variety of electricalrelated conditions, including engine cranking but no start, reduced engine power, OnStar inoperative, dome lamp remains illuminated, inaccurate fuel level, driver and passenger power seat inoperative and more. The issues may be caused by the body wiring harness making hard contact with the floor panel edge, under the left-rear seat cushion. Here’s how to inspect the cause and address it.

Fold over the left rear carpet to inspect the body harness for any hard contact to the floor panel’s edge. If the harness has been penetrated to the electrical wiring, repair the wires as necessary.

Rewrap the harness section that has been repaired with woven polyester electrical tape or equivalent anti-abrasion tape or electrical tape. Reposition the body harness so it does not make hard contact with the floor panel’s edge. Clear any DTCs and verify any electrical conditions have been eliminated.

Refer to GM bulletin #15-08-45-001 for additional information.

Inspect the harness (1) under the left rear carpet.

General Motors OE Engine Mounts Now Available through ACDelco

• ACDelco is introducing General Motors Original Equipment engine mounts to the aftermarket to better serve owners of

GM vehicles. These OE engine mounts provide the quality and durability professionals expect with the extra features consumers need.

ACDelco GM OE engine mounts are covered by a

12-month/12,000-mile warranty and are distinguished by these features:

• Tuned specifically for each model depending on its use

• Designed to function with all surrounding components to ensure the mounts bolt correctly and to eliminate

• interference with other vehicle components

Provides crash protection with a metal interlocking system that helps control the mass of the engine in the event of a collision

Helps guard against corrosion with an e-coating that protects aluminum and metal parts for 10 years.

ACDelco GM OE engine mounts cover millions of GM vehicles on the road. For a complete list of parts and applications, refer to the electronic catalog.

The new Gooseneck/5th Wheel Trailering Prep Package, with a spray-in bedliner, makes the trucks ready to tow larger trailers right from the factory. It’s available in the first quarter of 2016 for gas and diesel models, and features a frame-mounted hitch platform and tray that accommodates a gooseneck ball hitch or fifth wheel hitch mounting brackets, as well as a cargo bedmounted trailer harness. A new Gooseneck Completion Kit will also be available from Chevrolet dealers, featuring a 2-5/16inch ball hitch and two chain tie-downs.

For more information, go to chevrolet.com or gmc.com.

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2015 ISSUE 6

New Service Information Features Deliver Faster Results

Several enhancements were recently made to GM Service Information based on user feedback, making it easier to search for specific information and providing quick access to commonly used information.

Bulletin Searches

When performing a bulletin, campaign and preliminary information search, users can now search by Year Range,

Model and Keyword by clicking that search option on the home page. The Model option is a new function, replacing the

Platform option. Now, users can select the Model — Silverado-

4WD — rather than the Platform — K-Truck — that may not have been known.

Keyword Search Default

Another new search function is the search default, either

Documents or Titles, which is maintained for future searches.

Click the Search drop-down menu at the top of the screen when performing a Basic or Advanced search to change the search default.

Search by Year Range, Model and Keyword.

The Service Information application still defaults to the Basic search. The Basic search function enables the user to search the entire document or document titles with as many as five keywords. Valid keywords appear in the Symptom and DTC keyword lists.

Previously, the user was always returned to Documents as the default search. Now, if Titles was selected when performing a service manual search, the default search of Titles will be maintained when going to another publication, such as owner manuals, when performing a search.

Enhanced Graphics

GM Service Information features many graphics that may be more helpful during repairs when printed. TIFF and CGM graphic viewers must be downloaded by the user in order to view the enhanced graphics and have access to new print features.

To take advantage of the detailed graphics and other features, select the Help icon from the Service Information home page menu and click TIFF and CGM Graphic Viewers (Download and

Execute). Follow the on-screen instructions to install the image viewer plug-in.

New computers will need to have both plugins downloaded.

Otherwise, download only the CGM plugin to receive the new print features. The original CGM plugin does not need to be removed to install the newest version.

The Advanced search function allows the user to search the entire document or document titles with a phrase with as many as five words. For example: throttle position sensor. Valid search characters also include slash (/), period (.) and hyphen (-).

For example: a/c, 5.7L.

The updated viewer includes a new toolbar with a Print button that allows users to print full-page graphics. The Print Preview button, next to the Print button, allows the graphic to be viewed before printing. In addition, the Page Setup button can be used to change the orientation of the image — portrait or landscape — or change the selected paper size.

Download the TIFF and CGM Graphic Viewers to view and print the enhanced graphics.

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Maintenance Items and Parts

Convenient links to maintenance items and maintenance replacement parts have been added to Service Information for the 2012-2016 model years. These links put common maintenance resources all in one easy-to-find location.

The Maintenance Items chart and Maintenance Replacement

Parts document can be found after building the desired model and then selecting Service Manual > General Information

> Maintenance and Lubrication > Specifications. Or users can keyword search for maintenance items or maintenance replacement parts.

The new chart provides fast navigation to maintenance-related procedures and information, including approximate fluid capacities, resetting the GM Oil Life System, tire pressure indicator sensor learn, passenger compartment air filter replacement, and spark plug replacement. This information is located in various sections of Service Information as well. By linking the information in the new chart, it reduces the amount of navigation required to view the different maintenance procedures and information.

The Maintenance Replacement Parts list provides easy access to part numbers for maintenance items.

manuals. It lists parts such as the engine air cleaner/filter, engine oil filter, spark plugs and wiper blades.

The Maintenance Items chart also can be accessed through the quick link at the top the service manual page after building a vehicle. Other quick links include RPO Code List, Diagnostic

Starting Point, Diagnostic Trouble Code List and Symptom List.

In addition, for North American models, the Maintenance

Replacement Parts document provides part numbers for common maintenance items, similar to what is found in owner

Need Help?

For additional tips on using the Service Information functions, click the Search Help link at the top of the screen.

GM ASEP Students Compete in Social Media Challenge

Young auto technicians in the General Motors ASEP program now have a way to communicate their love of car culture and their auto education, as well as win great prizes.

The ACDelco GM ASEP School Challenge is a social media content showdown with all GM ASEP schools. The school and its ASEP students that produce the best social media content each quarter will receive ACDelco swag (such as hats, shirts and backpacks) and a $5,000 ACDelco power tool package for their GM ASEP school.

•

Show us why your school’s ASEP program is the best through images and videos posted to social media. Don’t forget to use the hashtag #ACDelco and identify your school as one of the more than 50 ASEP schools currently in the United States.

To be a contender for a prize package you should:

•

Encourage your students to connect with ACDelco on social media. (Current students are the best fit, but soonto-graduate students and even alumni all have great ASEP stories to tell and help their school.) Students can “Like” and Follow ACDelco on Facebook, Twitter, Instagram,

YouTube or Google+.

The user-generated content that students produce for social media should highlight your school’s ASEP program as a viable career path, communicate quality GM training and help prepare the next generation of trade.

Find out more by visiting any ACDelco social media channel –

Facebook, Twitter, Instagram, Google+ or YouTube.

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2015 ISSUE 6

New Detroit Training Center Offers High-Tech Training Environment

The new facility provides space for classroom training, hands-on exercises and video production.

General Motors recently opened the new Detroit Training

Center in Troy, Mich. The training center features the latest technology and in-classroom instruction, offering attendees a state-of-the-art facility for hands-on training.

The facility encompasses approximately 16,000 square feet and includes two Virtual Classroom Training (VCT) studios, four classrooms with garage space, an area to shoot videos for GM training programs, and a break area for students while attending classes.

The large classrooms feature the latest instructional technology.

Behind the classroom garage space is a large, open area that is used to set-up vehicles for future classes, validate information or help develop future training.

The training center is conveniently located north of Detroit and is easily accessed from the I-75 interstate highway. The new location is about seven miles northwest of the former training center location in Warren, Mich.

If you are in the Detroit area, be sure to sign up for a class at the new training center.

The connected garage space offers plenty of room for hands-on training.

VCT classes are broadcast daily.

In the VCT studios, instructors broadcast daily, many times teaching two or three classes a day.

The four Instructor-Led Training (ILT) classrooms provide a great environment for hands-on instruction. Each classroom has a smart board that enables the instructor to share presentations, service information, technical videos and more.

Behind each classroom is a garage space, where vehicles or other items are set up for use during hands-on exercises.

The new training center is located in Troy, Mich., about seven miles from the previous training center location.

2015 ISSUE 6

13

Diagnosing High-Speed

LAN Concerns

2007-2014 Cadillac Escalade models; 2007-2013 Chevrolet Avalanche, Silverado,

Suburban, Tahoe; 2007-2013 GMC Sierra and Yukon models; 2014 Chevrolet

Silverado HD, Suburban, Tahoe; 2014 GMC Sierra HD and Yukon models; and 2008-

2009 Hummer H2

The Data Link Connector (DLC) allows a scan tool to communicate with the high-speed GMLAN (Local Area

Network) serial data modules. The serial data is transmitted on two twisted wires that allow speeds up to 500 Kb/s. The twisted pair is terminated with two 120-ohm resistors – one is internal to the ECM and the other at the opposite end of the high-speed bus after the last module.

If a communication signal is lost, the software application will set a no communication U DTC (Diagnostic Trouble Code) against the respective control module. A loss of serial data

DTC does not represent a failure of the module that the code is set in.

3. If the high-speed LAN circuit integrity is good and the scan tool still will not communicate with any high-speed LAN modules, there could be a module corrupting the highspeed LAN bus. Try these methods to isolate which module is causing the concern:

•

Remove the battery feed fuse for each high-speed LAN module one at a time while monitoring the scan tool to see if communication returns with the other modules.

Always refer to the appropriate Service Information for the latest diagnostic information and procedures. The following diagnostic tips may help in locating the source of a loss of communication with a high-speed LAN module.

1. If the scan tool cannot communicate with any high-speed

LAN modules, check for proper terminal drag at the DLC terminals 6 and 14 using test probe J-35616-14 or -2A.

These terminals can become damaged from repeat probing and/or installing of the scan tool.

Remove the C3 (X3) connector from fuse block to isolate the highspeed LAN modules in two halves.

•

Disconnect each module one at a time and bypass the module by using jumper wires to connect the high-speed

LAN bus back together. Only use the correct test probe/

• terminal when bypassing the module.

Separate the bus into two halves by disconnecting the C3

(X3) connector from the back of the left instrument panel junction block. With the C3 (X3) connector removed, only the ECM, TCM, and BCM will be online with the scan tool. If there is communication with these modules, the concern is on the side of the bus that is disconnected.

Probe terminals 6 and 14 using the proper test terminals.

2. Verify the high-speed LAN circuit integrity by measuring the resistance across DLC terminals 6 and 14 with a DVOM with the battery disconnected. A normal reading would be

60 ohms +/– 5 ohms. A reading less than 60 ohms would indicate the high-speed LAN bus is shorted together and a higher reading indicates high resistance/open in the high- speed LAN bus.

Many high-speed LAN modules use small .64 series terminals and are often the main culprit for intermittent electrical concerns. When probing modules or inline connectors with

.64 series terminals, be sure the correct .64 test probe is being used.

Refer to the latest version of #PI4667 for additional information.

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2015 ISSUE 6

ACDelco Releases New CONNECTION Parts and Accessories Catalog

ACDelco plans to debut a new CONNECTION Parts and Accessories catalog soon, introducing a comprehensive next-generation parts catalog that will provide shops with more assistance than ever.

The goal of the new catalog is to help you find the part you need faster, save steps and provide multiple ways to search for parts, all while providing up-sell opportunities.

You can expect access to this exciting new catalog in the next few months. In the meantime, we’ve assembled a preview of the new features so you are ready to use the new online catalog when it goes live.

Here are new features:

Smart Search Catalog: Type in a vehicle or VIN and part description into the “Smart Search” box to lookup the parts you need. As you type, matches are instantly displayed below from which you can select.

Improved Vehicle Selection: Follow Step One for vehicle year,

Step Two for make and Step Three (optional) for submodel and/or engine. Notice that cars are now separated from trucks and vans.

New Catalog Results Layout: Detailed catalog results now include an image of the part as well as additional information you might find helpful during the ordering process.

ACDelco Adds 108 Professional New Starters and Alternators

New product introductions continue for ACDelco, as it releases 108 Professional all-new alternators and starters covering 1988-2014 models from Chevrolet, Buick, GMC,

Cadillac, Pontiac, HUMMER, Saab, Chrysler, Ford, Mercury,

Lincoln, Honda, Toyota, Nissan and other manufacturers.

This includes 70 Professional all-new alternators and 38

Professional all-new starters. None of these components are remanufactured. They are backed by a two-year/24,000mile limited parts warranty and 100-percent validated for performance.

Alternators are tested for voltage stability, terminal function and electronic circuit board integrity; and starters are tested for solenoid contact life, coil balance and pull strength. Drive gears and clutches are assembled to tight specifications for additional peace of mind.

2015 ISSUE 6

15

Other features include:

•

Components that are 100-percent greased and

• lubricated for long-term reliability in harsh conditions

Key mounting surfaces and contact points are gauged

•

• and measured for proper fit

Engineering enhancements to original internal components provide the latest and most efficient unit for vehicles

100 percent end-of-line tested to verify quality assembly and functionality.

A special ACDelco Tech Hotline for new starters and alternators provides installation, technical and vehicle application support. Call 800-854-0076 Monday-Friday from 8 a.m. to 8 p.m. ET and on Saturday from 8 a.m. to 4:30 p.m. ET.

See the ACDelco electronic catalog for the most up-to-date vehicle applications and a complete list of parts.

Vintage Chevy Nova Has a Turbocharged Heart

Rated at 272 horsepower, it offers comparable power to the

275-hp 327 (5.3L) V-8 originally offered in the ’67 Nova SS.

With a curb weight of approximately 3,100 pounds, the

327-powered Nova SS was widely praised in its day for a strong power-to-weight ratio, which helped make it one of the industry’s quicker muscle cars. That performance advantage is amplified in the Chevrolet Performance concept, as the alliron V-8 has been replaced with an all-aluminum turbo-four, for a more enviable 50/50 front-to-rear weight distribution.

And in place of the original four-speed transmission is a modern six-speed manual.

Demonstrating the evolution of high-performance and the latest in crate-engine technology, Chevrolet’s turbocharged

1967 Nova 2.0 concept vehicle is a contemporary hot rod with timeless style.

It was built to showcase Chevy’s new “LTG” 2.0L turbo crate engine as an alternative to conventional V-8 conversions.

The LTG crate engine, the electronic control unit, the engine accessory-drive system and even the six-speed manual transmission – and requisite installation kit – are all available from Chevrolet Performance.

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2015 ISSUE 6

Training Schedule

Current Instructor-Led Training (ILT) Courses

How to Take ACDelco Training

Go to www.acdelcotechconnect.com

and click the Training tab to log in to the

ACDelco Learning Management System (LMS).

To launch or enroll in courses in your

training path, open the home page to view your Training Progress Status

Report, select Show Detail, and then click the course number and title to view details on a specific course and to launch or enroll in the course.

To view Instructor-Led Training (ILT) courses (ILTs are full-day and half-day hands-on classroom courses), click Take

Training > Catalog > Catalog Search and select Instructor-Led Training under Delivery Type.

To view Virtual Classroom Training

(VCT) courses (VCTs are 1- to 2-hour live online courses), click Take Training

> Catalog > Catalog Search and select

Virtual Classroom Training under

Delivery Type.

Training Update

Receive Credit Where It’s Due

To receive training credit for attending an ACDelco Service Seminar, after logging in to the ACDelco Learning

Management System (LMS), click the

Seminar Participation tab at the top of the Manage My Training section on the home page. A form will be displayed where you can input the information necessary to receive credit.

To launch a Web-Based Training

(WBT) course (WBTs are 1- to 4-hour self-guided online courses), click Take

Training > Catalog > Catalog Search and select Service or Business Web-

Based Training under Delivery Type.

To launch a TechAssist (TAS) course

(TAS courses are 15- to 20-minute online presentations on a specific topic), click Take Training > Catalog >

Catalog Search and select TechAssist under Delivery Type.

To launch a Simulation (SIM) (SIMs require users to complete all repairs for a condition), click Take Training >

Catalog > Catalog Search and select

Simulation under Delivery Type.

Enter the validation code, which was provided during the seminar, along with the course number and the session date. Click the Submit button. After the information has been recorded, credit for the seminar will appear on your

Training Progress Status Report.

If you have any questions about the seminar information, click the Contact

Us link to contact the help desk.

The following ILT courses are currently being scheduled:

Course Number Course Name

S-BK05-02.01ILT

ABS Operation and Diagnosis

S-BK05-03.01ILT

Electronic Brake and Chassis

Controls: Is the vehicle really smarter than the driver?

S-DS11-02.01ILT

S-DS11-13.01ILT

Service Programming – Flash or Pass: Don’t pass up potential customers!

Vehicle Network Communications:

When modules talk, who is really listening?

S-EL06-04.02ILT

Network Communication Diagnosis

S-EL06-10.02ILT

Electrical Power Management

S-EL06-11.02ILT

Enhanced Automotive Circuit

Diagnosis

S-EL06-13.01ILT

Body Electrical Global Diagnostics

S-EL06-14.01ILT

S-EL06-17.01ILT

S-EM01-01.01ILT

S-EP08-03.01ILT

S-EP08-04.01ILT

S-EP08-05.01ILT

S-EP08-06.01ILT

S-EP08-07.01ILT

S-EP08-08.02ILT

S-EP08-09.01ILT

Advanced Body Control System

Electrical Diagnostics

Electrical Diagnostics: Chasing Lost

Electrons

Valvetrain Controls: Are they phasing you?

Engine Performance Air Induction and Fuel System Diagnostics

Engine Performance Fault

Monitoring and Emission System

Diagnostics

Engine Performance Advanced

Drivability Diagnostics

After Combustion Sensors: Is what is in the exhaust making your engine run rough?

Air Induction and Fuel Injection

Systems

Evaporative Emissions Controls:

Why is there always a code but never a leak we can find?

Spark Generation: Is a lack of spark sending you up in flames?

S-EP08-10.01ILT

Direct Injection

S-EP08-81.02ILT

Duramax Diesel Operation and

Diagnosis

S-SS04-01.01ILT

Vibration Correction Diagnostics

ST-PU-0006-15