July 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 July GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
Diagnosing History DTCs
During vehicle diagnosis, a key part of Strategy Based Diagnosis is to check for current and history DTCs. It’s important to understand DTC status, its relationship to diagnosing a vehicle […]
Oil Pump and Engine Wiring Harness Conditions
Several DTCs may be set on some 2024 Trax models equipped with the 1.2L engine (RPO LIH) that may be caused by debris in the oil pump or an engine […]
Charge Air Inlet Pipe Air Leak
Some 2023 Equinox and Terrain models equipped with the 1.5L 4-cylinder engine (RPO LSD) may have a reduced power condition along with DTCs P0237 (Turbocharger Boost Sensor Circuit Low Voltage), […]
Engine Vibration After Engine Mount Replacement
An engine vibration may be felt after the engine mounts (Fig. 8) were replaced on some 2019-2021 Silverado 1500, Sierra 1500; 2022 Silverado 1500 LTD and Sierra 1500 Limited models. […]
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 reviews air conditioning system line repair using the J-41425 […]
Latest GM Global EPC Update Enhances Search Functions and Part View Options
The GM Global Electronic Parts Catalog (EPC) was recently updated with a number of enhanced features that add to the search functions of the EPC. Many of the new features […]
Dust Intrusion in the EVAP System
When operated in extremely dusty environments, there may be some dust intrusion into the evaporative emission (EVAP) system that can plug the canister and canister vent solenoid on some 2019-2023 […]
June 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 June GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
Programming Key Fob Transmitters
When performing the IMMO Immobilizer Learn procedure to program or add key fob transmitters (Fig. 14) on some 2021-2023 Tahoe, Suburban, Yukon, Escalade; 2022-2023 Silverado, Sierra; and 2024 Silverado 2500HD/3500HD […]
Pop or Rattle Sound When Turning
Some 2021-2023 Tahoe, Suburban, Yukon and Escalade models may have a pop, clunk, rattle or click sound from under the vehicle while turning. In most cases, the sound can be […]
All-New Chevrolet Trax Gets Bigger and Bolder
With a wide range of design and technology choices in five different trim levels: LS, 1RS, LT, 2RS and ACTIV (Fig. 1), the 2024 Chevrolet Trax has gotten bigger and […]
2024 Trax TAC Action Center
The GM Technical Assistance Center, or TAC, (U.S.) has established an Action Center for the all-new 2024 Chevrolet Trax. (Fig. 10) Fig. 10 TAC Action Centers are designed […]
FSE Technician Recognition Awards – 2nd Quarter 2023
The GM Field Service Engineer (FSE) Technician Recognition Awards (U.S.) celebrate the skill and dedication of dealership technicians who have recently worked with FSE’s on challenging repairs. Technicians at GM […]
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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
