The 6.6L Duramax diesel engine (RPO L5P) and Allison 6-speed transmission (RPO MW7) available in 2017-2018 Silverado, Sierra; and 2019 Silverado 2500/3500 and Sierra 2500/3500 models have several different operating […]

Some 2016-2017 ATS, CTS, CT6, Camaro; 2017 LaCrosse, XT5 and Acadia models equipped with the 3.0L V6 engine (RPO LGW) or 3.6L V6 engine (RPO LGX) may have a hollow […]

The power liftgate may stop when opening from the fully closed position (usually opening not more than 15 inches, or 38 cm) or will not close from the open position […]

A body creak sound or rattle may be heard near the upper header by the liftgate hinge on some 2018-2019 XT5 models. The sound or rattle may be caused by […]

Vibration issues are some of the most challenging conditions to accurately diagnose and repair. To help with diagnosis, the CH-51450 Pico Oscilloscope Diagnostic Kit with NVH was released for all […]

10218.12V – Emerging Issues (U.S.) December 13, 2018 The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics […]

Recent GM studies have shown that automatic transmission oil cooler flush requirements have limited benefit on many current transmission repairs. Based on the studies, GM will no longer require a […]

The Active Noise Cancelation (ANC) module filtering function may not be operating properly or the ANC microphone may not be seated correctly in the headliner on some 2016-2018 Malibu models. […]

Some 2018 Equinox and Terrain models equipped with the 1.5L 4-cylinder engine (RPO LYX) or 2.0L 4-cylinder engine (RPO LTG) may have an illuminated Check Engine lamp and DTCs P0299 […]

Some 2017-2019 Bolt EV models may not have charged to a full charge level, as shown on the power indicator gauge on the instrument cluster, after a complete vehicle charge […]

The Restorator from Vaportek is a new odor eliminator system now available through GM Dealer Equipment. Based on GM testing, the easy-to-use, portable system effectively eliminates odor contamination quickly and […]

After replacing a hybrid/EV battery section on the 2011-2019 Volt; 2014-2016 ELR, Spark EV; 2017-2018 CT6 PLUG-IN; and 2017-2019 Bolt EV models, the new battery section has to be balanced […]

In the simplest terms, electricity consists of the movement of electrons, which flow through batteries, wires, switches, and other conductors. A common comparison is that electrons in a wire flow […]