Talc powder applied inside the rubber boot of the ignition coil may be causing a rough running engine or misfire condition on some 2019 Envision, Regal, ATS, CTS, Camaro, and […]

For 20 years, the Mark of Excellence program (U.S.) has recognized the achievements of GM dealership personnel. (Fig. 6) Service technicians enrolled in the program can earn both recognition as […]

An update to the GDS 2 core software (Version 21.2.08000) was released on December 9 in TIS2Web. The GDS 2 update includes numerous bug fixes, including a fix for the […]

Some 2020 Silverado 1500 and Sierra 1500 models equipped with the 3.0L diesel engine (RPO LM2) (Fig. 12) may have the engine cooling fans running continuously for an extended period […]

Some 2018-2019 Equinox and Terrain models may have an extended crank time that occurs intermittently after the vehicle has been sitting for at least 20 minutes. In this case, it […]

A broken or loose engine ground cable/strap on some 2019-2020 Silverado 1500 and Sierra 1500 models equipped with the 2.7L engine (RPO L3B), 5.3L engine (RPO L84) or 6.2L engine […]

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 […]

The used car departments and collision repair centers of GM dealerships (U.S.) now have a new way to diagnose non-GM vehicles — the MAHLE TechPRO Professional Aftermarket Diagnostics. With no […]

The rollout for Techline Connect (TLC), the replacement application for TIS2Web, is now complete for all U.S. dealerships. The rollout for Canadian dealerships will begin in early December. Technicians that […]

From the latest diagnostic and technical repair information to new model features and special tools, our goal at TechLink is to bring you the latest news on GM service topics […]

After the Brake Master Cylinder Assembly has been replaced on 2019-2020 XT4 models, a GDS 2 error message may display when trying to deactivate the brake boost system when performing […]

Some 2015-2020 Tahoe, Suburban, Yukon and Escalade models may have a squeak sound heard from under the vehicle while driving at slow speeds. The sound may be caused by the […]

The Lane Keep Assist icon may not appear on the instrument cluster on some 2019-2020 Silverado 1500 and Sierra 1500 models. In addition, the Lane Keep Assist switch LED indicator […]

The power door locks may unlock three times in succession immediately after auto locking, usually at start-up or while driving, on some 2016-2020 Camaro models. The unwanted unlocking may occur […]

The GM Service Information (SI) is updated daily in order to provide technicians with the latest, most accurate information available to diagnose and repair GM vehicles. Since the Service Information […]

As the newest luxury sedan in the Cadillac lineup, the all-new 2020 CT5 has been designed with a number of performance and technology features, and wrapped in a stylish fastback […]

Location masking on some 2019-2020 GM models equipped with Infotainment 3 Systems (RPO IOR, IOS, IOU, IOT) allows owners to disable the location services feature in their vehicle. By turning […]