7th Annual Honoring Our Heroes Silent Auction Offering Special Edition Toolboxes

7th Annual Honoring Our Heroes Silent Auction Offering Special Edition Toolboxes

GM Customer Care & Aftersales, GMC and GMC dealers are hosting the 7th Annual Honoring Our Heroes Gala to help raise funds to build custom-designed, mortgage-free Smart Homes that meet […]

April 19, 2019
New Diagnostic Charge Battery Station Available Soon

New Diagnostic Charge Battery Station Available Soon

The next generation Diagnostic Charge Battery Station (DCBS), available beginning in July 2019 from GM Dealer Equipment, promises to make battery testing faster and easier. Integrating the latest technology, the […]

April 19, 2019
End of Windows 7 Support

End of Windows 7 Support

Techline computers in GM dealerships running a Windows 7 Professional operating system (OS) must be replaced by December 31, 2019 in order to receive assistance from the Techline Customer Support […]

April 19, 2019
Multiple Electrical Concerns Due to Wiring Harness Contact

Multiple Electrical Concerns Due to Wiring Harness Contact

There may be several electrical conditions on some 2017-2018 Silverado and Sierra and 2019 Silverado LD and Sierra Limited models. The conditions may include several illuminated brake and traction control […]

April 19, 2019
Generator Conditions Due to Water Leak

Generator Conditions Due to Water Leak

Some 2018-2019 Express and Savana vans equipped with the 4.3L V6 engine (RPO) LV1 may have a hard start condition, broken fan belt, loss of power steering or loss of […]

April 19, 2019
10-Speed Automatic Transmission Control Valve Body Bolt Kit

10-Speed Automatic Transmission Control Valve Body Bolt Kit

When replacing the control valve body on the 10-speed automatic transmission (RPO MQB) on 2019 CT6, Silverado 1500 and Sierra 1500 models, some of the bolts are one-time use bolts […]

April 19, 2019
Hybrid and EV Emergency First Responder Information

Hybrid and EV Emergency First Responder Information

First responder information regarding various hybrid and electric vehicles (EV) produced by GM is available online at GMSTC.com for emergency personnel. The information can help first responders in learning about […]

April 19, 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 […]

April 19, 2019
New Chevrolet Silverado 4500HD, 5500HD, 6500HD Take on Medium-Duty Market

New Chevrolet Silverado 4500HD, 5500HD, 6500HD Take on Medium-Duty Market

The new 2019 Chevrolet Silverado 4500HD, 5500HD, 6500HD chassis cab models (Fig. 1) are the newest entries in the medium-duty truck market. The trucks are available as regular and crew […]

March 29, 2019
Silverado 4500HD, 5500HD, 6500HD Powertrain Operation

Silverado 4500HD, 5500HD, 6500HD Powertrain Operation

The new 2019 Chevrolet Silverado 4500HD, 5500HD, 6500HD chassis cab models are equipped with a standard 6.6L Duramax diesel V8 engine (RPO L5D) and Allison 6-speed automatic transmission. (Fig. 8) […]

March 29, 2019
Requesting GM Upfitter Technical Assistance

Requesting GM Upfitter Technical Assistance

The GM Upfitter Integration website — gmupfitter.com — offers a variety of valuable information and assistance for technicians and other personnel, including the latest bulletins involving upfitter equipment and technical […]

March 29, 2019
Shipping Hazardous Materials to the Warranty Parts Center

Shipping Hazardous Materials to the Warranty Parts Center

When shipping any automotive hazardous materials, such as air bags, seat belt pretensioners, brake boosters, compressed gas shocks, batteries, paint, solvents, and other parts, to the Warranty Parts Center (WPC), […]

March 29, 2019
Engine Performance and Fuel Range Conditions

Engine Performance and Fuel Range Conditions

A lack of engine performance along with an incorrect low fuel range display may be found on some 2017-2018 Acadia, Enclave, Traverse and XT5 models equipped with the 3.6L V6 […]

March 29, 2019
Engine Tick or Squeak Noise

Engine Tick or Squeak Noise

Some 2011-2015 Volt; 2011-2016 Cruze; 2012-2019 Sonic; 2013-2019 Encore, Trax; and 2014-2017 ELR models equipped with the 1.4L 4-cylinder engine (RPOs LUV, LUU) (Fig. 17) may have a tick or […]

March 29, 2019
Wheelhouse Liner Interference

Wheelhouse Liner Interference

A rubbing or popping sound coming from the front of the vehicle while making a sharp turn at low speeds may be heard on some 2019 Blazer models. One or […]

March 29, 2019
Frequent Navigation Service Has Expired Message

Frequent Navigation Service Has Expired Message

The infotainment system may display a “Navigation service has expired.” message on some 2018-2019 Regal, ATS, CTS, XTS, Terrain; 2019 CT6, XT4, Blazer, Camaro, Colorado, Equinox, Malibu, Silverado, Volt, Canyon […]

March 29, 2019
2019 Camaro ZL1 1LE with 10-Speed Automatic Transmission

2019 Camaro ZL1 1LE with 10-Speed Automatic Transmission

The 2019 Camaro ZL1 1LE (Fig. 1) now offers an available 10-speed 10L90 automatic transmission (RPO MGL). Unique calibrations were developed for the transmission as well as the Electronic Limited […]

March 21, 2019