The Super Cruise hands-free driver-assistance technology (RPO UKL) is now available on 2021-2022 Escalade, CT4, CT5; 2022 XT6, Bolt EUV, Silverado 1500, Sierra 1500 and HUMMER EV Pickup. The advanced […]
Some 2021-2022 Corvettes equipped with the Z51 Performance Package (Fig. 1) may have a brake pulsation or grinding sound when applying the brakes. There also may be a pitting condition […]
After replacing the wiring harness on the Diesel Exhaust Fluid (DEF) tank on some 2020-2022 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P), […]
The power liftgate actuators (Fig. 7) from some 2018-2022 Acadia, XT5 and 2020-2022 XT6 models that have been returned to the Warranty Parts Center show damage due to improper removal. […]
Some 2021-2022 Equinox and Terrain models equipped with the 1.5L engine (RPO LYX) may have an intermittent no crank condition, but the vehicle powers up normally. If the intermittent power […]
The instrument panel on 2021-2022 Envision models features ambient LED lighting. The chrome edge of the instrument panel surrounding the left and center sections illuminate with a thin light strip. […]
The latest software update (CH-47976-SWV16) for the CH-47976 Active Fuel Injection Tester (AFIT) has recently been released. The software update includes: 2023 model year database V19.00 updates for all vehicle […]
As a rule of thumb, tire pressure will change about 7 kPa (1 psi) for every 6°C (10°F) change in temperature – dropping when it gets colder outside and rising when it […]
In extremely cold weather conditions (0°F / –18°C or less), the charge air cooler (CAC) on some turbocharged engines may experience icing due to moisture build-up, restricting air flow and […]
Some 2017-2021 Acadia, XT5; 2018-2021 Enclave, Traverse; 2019-2021 Blazer; and 2020-2021 XT6 models equipped with the 2.0L engine (RPO LSY, LTG), 2.5L engine (RPO LCV) or 3.6L engine (RPO LFY, […]
For the 2022 model year, several changes have been made to the features of the Rear Seat Infotainment (RSI) system on Tahoe, Suburban, Yukon and Escalade models. (Fig. 17) These […]
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 […]
Looking for diagnostic advice or more insight about a tough repair from the professionals at the GM Technical Assistance Center? Beginning this month, we’re bringing their expertise to you with […]
GM has announced the all-new Technician Excellence Program (U.S.) for 2022 to recognize dedicated dealership service technicians. (Fig. 1) Enrolled technicians who achieve Gold Certification, Master Technician Certification (MTC), or […]
If diagnosis points to the need to replace a failed external tailgate release switch on 2019-2022 Sierra 1500, Sierra 2500/3500; Silverado 1500 and Silverado 2500/3500 models, including models equipped with […]
When replacing a collapsed lifter and/or a lifter that has come apart due to an internal lifter issue on 2020-2021 Silverado 1500, Sierra 1500; 2021 Tahoe, Suburban, Yukon and Escalade […]
There may be several power seat adjustment conditions found on some 2020-2021 Corvette, CT4, CT5; 2021 Envision, Escalade, Tahoe, Suburban and Yukon models. The seat adjustment conditions may include: The […]
The Chevrolet Multi-Flex tailgate and GMC MultiPro tailgate (RPO QK2) available on the 2022 Silverado 1500, Silverado 2500/3500, Sierra 1500 and Sierra 2500/3500 offers flexibility and functionality designed to improve […]
Some 2016-2020 Camaro models (Fig. 7) equipped with the 8-speed automatic transmission (RPO M5T, M5U) or 10-speed automatic transmission (RPO MF6, MGL, MI1, MI2, MI4) may have a Shift to […]
The Chevrolet Complete Care program (U.S.) has been updated recently to include an extension of the Included Maintenance timing requirements for the owners of 2020-2022 Corvette models (C8) (Fig. 11) […]
Corvette E-Ray Delivers Electrified AWD Performance
Corvette E-Ray 12-Volt Lithium-Ion Battery
Power Liftgate Battery Draw Conditions
April Service Newsletter from the Experts at GM TAC
New Design Intake Manifold Addresses Poor Engine Performance
Free Spinning or Grinding Starter Sounds
May Service Newsletter from the Experts at GM TAC
New Battery Cell Chemistry Identification
GM Service Know-How Emerging Issues
New Trailer Tire Pressure Sensors Offer Increased Capability
Inoperative USB Port Diagnosis
Avoid the TUN# Label When Cleaning Transmission Cases
High-Pitched Whistling Sound at IdleGM Dealer Equipment (GMDE)
TAC Newsletter June 2024
TAC Newsletter May 2024
Techline Connect Tips June 2024
The design of today’s modern vehicles — and the proper operation of many new components and systems — has led to the critical importance of properly balanced and low Road […]
With the MDI Manager application software, the MDI 2 can be configured to communicate with a PC using several possible networks, such as a USB cable, ethernet cable, Wireless Local […]
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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