After installing a GM remanufactured High Feature V6 (HFV6) engine in some 2007-2009 G6; 2007-2010 Aura, Outlook; 2007-2011 STS; 2007-2012 Malibu; 2007-2016 Allure (Canada only), LaCrosse, CTS, SRX; 2007-2017 Equinox, […]
Some 2020 Silverado 2500/3500 and Sierra 2500/3500 models may have a brake squeal condition caused by the low scorch friction material used on the original brake pads. New brake pads […]
A whine, rattle or flutter sound may be heard coming from the front end of some 2020 Blazer models when driving at highway speeds. The sound is dependent on wind […]
Some 2016-2019 ATS models and 2016-2020 Camaro models equipped with the 6-speed manual transmission (RPO M13) may have an illuminated Check Engine MIL and DTC P17A2 (Transmission Clutch Slip Detected) […]
A boom sound or flutter vibration may be noticed on some 2020 Encore GX models equipped with the 1.3L engine (RPO L3T) at low speeds with light throttle input. If […]
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 […]
The all-new 2021 Chevrolet Tahoe and Suburban and 2021 GMC Yukon and Yukon XL are ready to live up to their legendary nameplates and segment leadership. The fully redesigned models […]
The Air Ride Adaptive Suspension available on the redesigned 2021 Tahoe/Suburban and Yukon/Yukon XL is an automatic level control suspension with a variable rate spring design. (Fig. 11) Fig. 11 […]
The GM Technical Assistance Center, or TAC, (U.S.) has established an Action Center for the all-new 2021 GMC Yukon and Yukon XL (Fig. 16) and 2021 Chevrolet Tahoe and Suburban. […]
The latest software update for the EL-52545 TPMS/RF Tool (Fig. 18) is now available. The update adds the following features and enhancements: Trailer Tire Pressure Monitoring System (TPMS) learn and […]
Proper installation of the engine oil pan on the 2020 Encore GX and 2021 Trailblazer equipped with the 1.2L engine (RPO LIH) requires that the room temperature vulcanizing (RTV) sealant […]
Some 2014-2019 Corvette models equipped with the 6.2L V8 engine (RPO LT1) and 8L90 automatic transmission (RPO M5U) may have a warble-type sound coming from the rear of the vehicle […]
Owners of some 2020 Encore GX and 2021 Trailblazer models equipped with the 1.3L engine (RPOT L3T) may notice an unstable engine RPM at idle and an illuminated Check Engine […]
A quick look at the exhaust pipe crossover section on 2019-2020 Silverado and Sierra models equipped with a V6 or V8 engine shows that it is not a completely round […]
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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