Newly Arrived EVs May Not Charge
Some 2024 Silverado EV, HUMMER EV and HUMMER EV SUV models that have just arrived at the dealership may not charge initially when the vehicle is connected to a Level […]
Some 2024 Silverado EV, HUMMER EV and HUMMER EV SUV models that have just arrived at the dealership may not charge initially when the vehicle is connected to a Level […]
There may be high resistance in the G132 and G133 grounds, located behind the right-hand wheelhouse liner on some 2019-2022 Silverado 1500 and Sierra 1500 models. (Fig. 5) As a […]
The 110/120-volt power outlet may be inoperative on some 2020-2023 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models. Vehicles may have two alternating current power outlets, located in the cab on the […]
Some 2020-2024 XT5 and XT6 models may have the Forward Collision Alert indicator shown on the windshield at all times. (Fig. 9) The indicator may be on any time the […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar recaps several electric vehicle topics. (Fig. 8) Fig. 8 […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the December GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
GM has extended the use of the EL-50313 Midtronics GR8 Battery Tester/Charger for battery charging and diagnosing 12V batteries under warranty to the end of September 2024. Beginning October 1, […]
When opening the doors with the side windows fully closed on all HUMMER EV models, window indexing automatically lowers the window a small amount. Once the door is closed, the […]
Some 2020-2024 Corvettes may have a no start condition or the vehicle may not shut down. In some cases, these conditions may lead to a drained battery. There also may […]
The 2024 Blazer EV is the latest addition to the GM electric vehicle lineup that is athletic and aggressive in both styling and performance. But it also features some exciting […]
The MAHLE TechPRO Professional Aftermarket Diagnostics application (Fig. 9) was recently introduced by GM Customer Care and Aftersales to help U.S. dealerships with diagnosing non-GM vehicles. The diagnostic app provides […]
HUMMER EV trucks feature standard 35-inch tires that are specially engineered to deliver outstanding traction and towering ground clearance. (Fig. 12) In addition, the pickup can fit tires up to […]
The Rear Cross Traffic Alert and/or Side Blind Zone Alert system (Fig. 14) on some 2021-2023 Tahoe, Suburban, Yukon and Escalade models may not detect certain vehicles. A “system unavailable” […]
A change has been made to the Transmission Oil Filter and Seal Kit (part number 24236933) (Fig. 18) for the 6L50 (RPO MYB), 6L80 (RPO MYC) and 6L90 (RPO MYD) […]
Damage to the wheel drive shaft threads (Fig. 1 and 2) may occur if power tools are used to remove the wheel drive shaft nut on some 2021-2023 XT5, XT6, […]
The 8-speed automatic transmissions (RPO M5N, MNU, M5U, M5X, MHA, M5T, MQE, MQD) in some 2015-2018 Corvette; 2015-2020 Escalade, Yukon; 2015-2023 Silverado 1500, Sierra 1500; 2016-2018 CTS; 2016-2019 ATS, CTS; […]
A number of powertrain DTCs may be set along with an illuminated Check Engine MIL on some 2023-2024 Colorado, Canyon; 2024 Silverado 1500 and Sierra 1500 models equipped with the […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the November GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar takes a look at the new 2024 Corvette E-Ray. […]
The Mark of Excellence program (U.S.) recognizes the achievements, professionalism, and commitment of GM dealership personnel, including those in the service department. Service technicians enrolled in the 2024 program who […]
GM Electric Vehicles (EV), such as the LYRIQ, Blazer EV and Silverado EV, are equipped with a high-voltage battery system for vehicle propulsion and a 12V battery system that is […]
The paint may have chipped or peeled on the front fascia or fender-to-fascia body seam on some 2020-2024 Corvettes. (Fig. 9) The paint chip may be due to the headlamp […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the October GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]