After replacing the transmission, control valve solenoid body, or Transmission Control Module on 2017-2019 Cruze; 2017-2020 Malibu; 2018-2019 LaCrosse; 2018-2020 Enclave, Regal, Traverse, Terrain; 2019-2020 Envision, XT4, Blazer; and 2020 […]
The Surround Vision camera system (RPO UV2) available on a variety of GM models displays an overhead view of the area surrounding the vehicle, along with front or rear camera […]
The Park Assist Control Module (PACM) may fall off the Controller Area Network (CAN) bus when other control modules are serviced on some 2020 CT5 models due to incorrect PACM […]
The Park Assist Control Module (PACM) may fall off the Controller Area Network (CAN) bus when other control modules are serviced on some 2020 CT5 models due to incorrect PACM […]
The GM Loan Tool Program (LTP) supplements the U.S. Essential Tool Program as a cost-effective alternative to purchases of high cost and/or infrequently used special tools. It does not replace […]
The Accessory Rear Seat Infotainment (RSI) system on some 2018-2020 Enclave and Traverse models (Fig. 6) equipped with ventilated front seats (RPO KU9) may power off when the vehicle doors […]
DTC P0747 (Transmission Control Solenoid Valve 1 Stuck On) may be setting at engine start-up when the transmission is in Park on some 2017-2019 Cruze; 2017-2020 Malibu; 2018-2020 Enclave, Envision, […]
An engine vibration condition may occur when the vehicle is stationary or accelerating from a stop on some 2014-2018 Silverado, Sierra; 2015-2020 Escalade, Tahoe, Suburban, Yukon; 2016-2019 CTS-V; 2016-2020 Camaro; […]
Some 2015-2018 Silverado and Sierra models and 2019 Silverado 2500/3500 and Sierra 2500/3500 models equipped with the 6.6L Duramax diesel engine (RPOs LML, L5P) and dual fuel tanks (23.5 gallon/89 […]
The horn may sound muffled, distorted or sounds only the high note on some 2018-2020 Enclave and Traverse models. These horn conditions may be caused by a frequency that distorts […]
Some 2020 XT4 models may have a brake squeal sound at low speeds. (Fig. 17) The front brake pads on some models may be susceptible to producing brake squeal. […]
If a 2017-2020 Colorado or Canyon model will not move or the transmission slips when shifted into any gear range immediately after flat towing the vehicle, inspect the internal components […]
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 […]
Early orders of the next generation EL-52800 Diagnostic Charge Battery Station (DCBS) are now shipping from GM Dealer Equipment. Its capabilities will make it easier and faster to test a […]
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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