Some 2020 Encore GX and 2021 Trailblazer models equipped with the 1.2L engine (RPO LIH) may have an illuminated Check Engine MIL and DTCs P0521 (Engine Oil Pressure Sensor Performance) […]

A rattle or creak sound may be heard coming from the quarter panel area while driving at highway speeds on some 2020 Corvette models. The sound may be due to […]

2020 Corvette Stingray models equipped with the Z51 Performance Package feature a rear spoiler that adds downforce to improve high-speed stability. (Fig. 15) If the Z51 spoiler is to be […]

A customer may request the pickup box and rear bumper be removed on 2019-2020 Silverado 1500 and Sierra 1500 models to install an aftermarket bed or body. (Fig. 18) If […]

Proactive Alerts, a feature of OnStar Advanced Diagnostics, are designed to help predict specific types of potential performance degradation of the battery, cables, and starter motor based on current vehicle […]

As the technology in new vehicles continues to evolve and expand, more electrical bandwidth and connectivity has become necessary to ensure all the data-driven features can operate efficiently together within […]

The GM Technical Assistance Center, or TAC, (U.S.) has established an Action Center for the all-new 2020 Corvette Stingray. (Fig. 7) Fig. 7 TAC Action Centers are designed to gather […]

Several intermittent conditions related to a low battery state of charge may be found on some 2018-2019 ATS, CTS, XTS, Corvette; 2018-2020 Envision, LaCrosse, CT6, Escalade, XT5, Equinox, Impala, Malibu, […]

Some 2020 Corvettes may have a small paint chip in the front fascia below the headlamp on one or both sides of the vehicle. (Fig. 10) The paint chip may […]

Have a question about installation or need information about the warranty on Associated Accessories offered through GM Accessories? (Fig. 14) Dealerships should contact the supplier or manufacturer of the specific […]

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 all-new 2020 Corvette Stingray is the fastest and most powerful entry-level Corvette ever produced. It’s mid-engine proportions and rear weight bias along with a race car-like view and driver’s […]

The Service Information for 2008-2020 GM models equipped with the 6T40, 6T70, 6L50, 6L80, or 6L90 6-speed transmission; 9T45, 9T50, 9T60, or 9T65 9-speed transmission; or VT40 continuously variable transmission […]