Archive for February, 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
New Trailering App Trailer Connection and Lighting Diagnosis

New Trailering App Trailer Connection and Lighting Diagnosis

The new trailering app (RPO U1D) available on the 2019 Silverado 1500 and Sierra 1500 (Fig. 8) uses the K68 Trailer Lighting Control Module (TLCM), or Trailer Interface Module, to […]

February 15, 2019
Diagnosing Automatic Transmission Conditions using GDS2 Session Logs

Diagnosing Automatic Transmission Conditions using GDS2 Session Logs

If a 2015-2019 GM model is being serviced for an automatic transmission operating condition or a vibration concern that can be duplicated, GDS2 should be used to aid in identifying […]

February 15, 2019
Shift Lever Rattle Sound

Shift Lever Rattle Sound

Some 2017-2019 Colorado and Canyon models equipped with the 6-speed manual transmission (RPO N8D) may have a rattle sound coming from the transmission shift lever. The sound may be due […]

February 15, 2019
Do Not Remove or Swap Navigation SD Cards

Do Not Remove or Swap Navigation SD Cards

The Navigation Data SD cards for infotainment systems with embedded navigation (RPOs IOT, IOU) (Fig. 18) that are available on 2018-2019 Regal, ATS, CTS, XTS, Terrain; and 2019 CT6, XT4, […]

February 15, 2019