Electronic Limited Slip Differential DIC Screens

Electronic Limited Slip Differential DIC Screens

The 2017-2019 Camaro ZL1 (Fig. 6) and Camaro SS 1LE; 2018-2019 Camaro ZL1 1LE; and 2015-2019 Corvette models equipped with the 6.2L V8 engine (RPOs LT1, LT4, LT5) feature an […]

March 21, 2019
2019 Colorado and Canyon Front Seat Design

2019 Colorado and Canyon Front Seat Design

The driver’s seat cushion on the 2019 Colorado and Canyon was redesigned to provide better entry and egress as well as improved comfort. Depending on the position of the steering […]

March 21, 2019
Setting the Timing on Gen 5 V6 and V8 Engines

Setting the Timing on Gen 5 V6 and V8 Engines

When installing a chain and gear set on the Gen 5 4.3L V6 (RPO LV1, LV3), 5.3L V8 (RPO L83) or 6.2L V8 engine (RPO L86, LT1, LT4) in some […]

March 21, 2019
DTC P0238 Set After Sensors Disconnected During Repairs

DTC P0238 Set After Sensors Disconnected During Repairs

Some 2019 XT4 models equipped with the 2.0L 4-cylinder engine (RPO LSY) may have DTC P0238 (Turbocharger Boost Sensor Circuit High Voltage) set after service repairs were performed that required […]

March 21, 2019
Clicking Sound from 9-speed Automatic Transmission After Engine Shutdown

Clicking Sound from 9-speed Automatic Transmission After Engine Shutdown

A rotational clicking sound may be heard after the engine is turned off on some 2017-2019 Cruze, Malibu; 2018-2019 Enclave, Envision, LaCrosse, Regal, Equinox, Traverse, Terrain; and 2019 XT4 and […]

March 21, 2019
New 2019 GM STC Course Catalog

New 2019 GM STC Course Catalog

The new 2019 GM Service Technical College (STC) Course Catalog (U.S.) (Fig. 16) is now available at GMSTC.com. Each year, the course catalog is updated with the current GM STC […]

March 21, 2019
GM Service Know-How

GM Service Know-How

The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics from GM Brand Quality and Engineering covered in […]

March 21, 2019
New Techline Connect Application Brings It All Together for Technicians

New Techline Connect Application Brings It All Together for Technicians

As technicians are at the forefront of GM’s efforts to deliver the best customer service experience in the industry, new and enhanced tools and resources are always needed to help […]

February 26, 2019
2019 Service Manager Survey Going on Now

2019 Service Manager Survey Going on Now

GM and other automotive manufacturers have teamed up to co-sponsor an annual industry study of service managers across the United States and Canada to help better understand industry trends and […]

February 26, 2019
Phone Ringtone Plays Continuously after Incoming Call

Phone Ringtone Plays Continuously after Incoming Call

The ringtone on a mobile phone may sound continuously through the vehicle speakers after an incoming call on some 2018-2019 Sonic, Trax, Terrain; and 2019 Blazer, Camaro, Colorado, Equinox, Silverado […]

February 26, 2019
Do Not Swap Control Modules on Global Architecture Models

Do Not Swap Control Modules on Global Architecture Models

GM’s Global Architecture, or Global A, electrical system does not allow control modules to be swapped between vehicles. (Fig. 10) This has been true since the first Global A vehicles […]

February 26, 2019
Are You Programming or Reprogramming?

Are You Programming or Reprogramming?

What’s the difference between setting up a control module, programming and reprogramming? Each one is done at different times based on the state of the control module. Here are some […]

February 26, 2019
CVT7 Transmission Fluid Pressure Switch Replacement

CVT7 Transmission Fluid Pressure Switch Replacement

There may be a transmission performance concern on some 2014-2017 Spark models equipped with the CVT7 continuously variable-ratio automatic transmission (RPOs M4M, MR8). (Fig. 12) The Check Engine MIL may […]

February 26, 2019
Complete All Steps When Performing Radio Programming

Complete All Steps When Performing Radio Programming

Several radio-related performance issues may appear if all steps are not completed when programming the radio on 2018-2019 Regal, ATS, CTS, XTS, Terrain; 2019 CT6, XT4, Blazer, Camaro, Colorado, Equinox, […]

February 26, 2019
Incorrect Oxygen Sensor on 2.4L Engine

Incorrect Oxygen Sensor on 2.4L Engine

An engine stumble or stall after startup on some 2010-2017 Equinox and Terrain models equipped with the 2.4L 4-cylinder engine (RPO LAF, LEA) may be caused by a faulty aftermarket […]

February 26, 2019
Colorado ZR2 Bison Offers Extreme Off-Road Performance

Colorado ZR2 Bison Offers Extreme Off-Road Performance

Chevrolet teamed up with premier off-road aftermarket supplier AEV (American Expedition Vehicles) to create the new 2019 Colorado ZR2 Bison (RPO ULV). (Fig. 1) Fig. 1   The unique Bison […]

February 15, 2019
GM Diagnostic Tool Packages Bundle New Computers with the MDI 2 (U.S. Only)

GM Diagnostic Tool Packages Bundle New Computers with the MDI 2 (U.S. Only)

GM is currently offering several GM diagnostic tool packages that provide U.S. dealerships an opportunity to upgrade obsolete Windows 7 computers and pick up a new MDI 2 (Multiple Diagnostic […]

February 15, 2019