Shift to Park Message
A Shift to Park message may be displayed on the Driver Information Center while the vehicle is in Park on some 2020-2023 Encore GX, Malibu; and 2021-2023 Trailblazer models. A […]
2024 Technician Excellence Program Rewards Dealership Technicians for Training Achievements
The 2024 Technician Excellence Program (U.S.) recognizes and rewards enrolled dealership technicians for achieving technical training certifications and meeting other service criteria. (Fig. 1) The primary 2024 program metrics are […]
Hands-Free Start Power Modes
The 2024 Silverado EV and Blazer EV are equipped with Hands-Free Start, which automatically starts the vehicle when the driver enters the cabin with a remote key fob and then […]
Poor Ground Path Condition
Some 2020-2024 CT4 and CT5 models may have a no start condition and/or a loss of power steering. Communication DTCs U0101, U0131, U0401, U0402, U1611, U1818, U1962, U220F, U3003 sym16, […]
Inoperative Trunk Latch
Some 2023-2024 Camaros may have a trunk lid that does not open when commanded from the vehicle’s trunk release buttons or the key fob. The inoperative trunk latch may be […]
New Service Tailpipes Available for Silverado and Sierra
GM Customer Care and Aftersales has released new service tailpipes and clamps for exhaust repairs on 2019–2024 Silverado 1500 and Sierra 1500 models equipped with the 4.3L (RPO LV3) and […]
Lunch with Your FSEs Meetings Now Offer Three Convenient Call Times
GM dealership technicians (U.S. only) looking to get the latest technical information as well as talk with their Field Service Engineers (FSEs) about recent repairs seen in the dealership should […]
Loud Sound Inside the Cabin at Low RPMs
A loud sound may be heard inside the cabin at 1,200–2,500 RPMs on some 2024 XT4 models. (Fig. 6) The sound typically occurs only during one drive cycle and does […]
January Service Newsletter from the Experts at GM TAC
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the January GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
GM Service Know-How Emerging Issues
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar demonstrates the pierce probing wires procedure. (Fig. 8) […]
Avoiding HVAC Blower Motor Parts Return Damage
Many times, common warranty repairs like HVAC blower motor replacements require that the part be returned to GM. Just like other vehicle components that are returned under warranty, HVAC blower […]
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 […]
High Resistance in Ground Straps
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 […]
Inoperative 110/120-Volt Power Outlet
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 […]
Print Edition
Previous Articles
November Service Newsletter from the Experts at GM TAC
Questions About Labor Times?
Answers to the Latest FAQs in Service Information
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 Issues
DCA-8000
Troubleshooting
Guide
TAC Newsletter December 2025
TAC Newsletter November 2025
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
