When replacing an engine due to internal damage on 2019 and prior GM passenger cars and trucks, extreme care should be taken when transferring components from the failed engine to […]
Some 2016-2019 Chevrolet Low-Cab Forward (LCF) trucks equipped with the 3.0L diesel engine (RPO IZ3) or 5.2L diesel engine (RPO I1B) may have an illuminated Check Engine MIL and DTC […]
The factory-provided Rearview Camera Kit (RPO 5N5) available on 2019 Silverado 1500 and Sierra 1500 models and 2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models include a camera, extension harness and […]
Some 2019 XT4 models equipped with the 2.0L 4-cylinder engine (RPO LSY) and 2019 Silverado 1500 and Sierra 1500 models equipped with the 2.7L 4-cylinder engine (RPO L3B) may have […]
The 6.6L V8 gasoline engine (RPO L8T) (Fig. 20) available on 2020 Silverado 2500/3500 and Sierra 2500/3500 models is now under the engine exchange program for the 2020 model year. […]
A whine sound may be heard coming from under the vehicle on some 2019-2020 Envision models equipped with the 2.0L 4-cylinder engine (RPO LTG) and the 9T60 automatic transmission (RPO […]
In order to ensure successful and complete repairs are made when reprogramming control modules, GM is now reviewing module reprogramming warranty claim information and comparing it to Service Programming System […]
The 2019 Q3 Mark of Excellence (MOE) Technician Product Knowledge Test was recently made available to technicians enrolled in the MOE Service Technician program (U.S. only). The test measures technicians’ […]
After making engine repairs that included removing and installing the engine wiring harness on the right side of the 3.6L V6 engine (RPO LGZ) on some 2017-2019 Colorado and Canyon […]
Some 2017-2019 XT5 and 2017 LaCrosse models may have a Service Transmission message displayed on the Driver Information Center along with one or more of the following DTCs: P0722, P0729, […]
When performing A/C service on 2013-2019 GM passenger cars and trucks equipped with R-1234yf refrigerant, there are several procedures that must be followed in order to make a proper repair. […]
Some 2011-2015 Volt models and 2014-2016 ELR models may not shift out of Park. If this condition is present, there may be water intrusion in the X98 Hybrid/EV Battery Charger […]
Some 2019 Blazer models may have an illuminated air bag warning lamp on the instrument cluster and several Brake-related messages displayed on the Driver Information Center, including Service StabiliTrak, Service […]
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 […]
November Service Newsletter from the Experts at GM TAC
Questions About Labor Times?
Stay Updated — IOK Radio Software and Connection Conditions
Key Fob Synchronization
CX Connect Features Updated in Latest Release
New SAVI Manager Release Updates USB Driver
Do Not Swap Control Modules
GM Service Know-How Emerging IssuesDCA-8000
Troubleshooting
Guide
TAC Newsletter December 2025
TAC Newsletter November 2025
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
All buttons on one key fob (Remote Keyless Entry transmitter) may be inoperative on some 2023-2026 Escalade, LYRIQ, Corvette, Silverado 1500, Silverado 2500HD/3500HD, Tahoe, Suburban, Sierra 1500, Sierra 2500HD/3500HD, Yukon; […]
To avoid wait times for technical support in the dealership, prior to contacting the GM Technical Assistance Center (TAC) and Techline Customer Support Center (TCSC) as well as and other […]
Take a detailed look at a wide range of innovative features and advanced systems found on GM vehicles to gain a better understanding of proper operation. Each short video reviews how a feature works, highlights operating tips and shows ways to customize settings, if applicable.
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