2024 Envista TAC Action Center

2024 Envista TAC Action Center

An Action Center for U.S. dealerships to provide feedback on the all-new 2024 Buick Envista (Fig. 10) has been established by the GM Technical Assistance Center (TAC).   Fig. 10 […]

August 18, 2023
Testing, Software and More — All the Answers to Your DCBS Questions

Testing, Software and More — All the Answers to Your DCBS Questions

The EL-52800 Diagnostic Charge Battery Station (DCBS) is the recommended and approved tool for diagnosing battery replacements and submitting battery warranty claims. And effective January 1, 2024, the DCBS (Fig. […]

July 31, 2023
Diagnosing Over-the-Air Update Concerns

Diagnosing Over-the-Air Update Concerns

When an Over-the-Air (OTA) update has been downloaded to a 2021-2024 Chevrolet, Buick, GMC or Cadillac vehicle and is available to be installed, a message is displayed on the infotainment […]

July 31, 2023
Meet the New Buick Envista

Meet the New Buick Envista

The 2024 Envista is an all-new model in the Buick lineup. (Fig. 11) With a long wheelbase, low roof and the sleek profile of Buick’s new design language, it offers […]

July 31, 2023
July Service Newsletter from the Experts at GM TAC

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 […]

July 31, 2023
Diagnosing History DTCs

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 […]

July 21, 2023
Oil Pump and Engine Wiring Harness Conditions

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 […]

July 21, 2023
Charge Air Inlet Pipe Air Leak

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), […]

July 21, 2023
Engine Vibration After Engine Mount Replacement

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. […]

July 21, 2023
GM Service Know-How Emerging Issues

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 […]

July 21, 2023
Latest GM Global EPC Update Enhances Search Functions and Part View Options

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 […]

June 28, 2023
Dust Intrusion in the EVAP System

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 28, 2023
June Service Newsletter from the Experts at GM TAC

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 […]

June 28, 2023
Programming Key Fob Transmitters

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 […]

June 28, 2023
Pop or Rattle Sound When Turning

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 […]

June 28, 2023
All-New Chevrolet Trax Gets Bigger and Bolder

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 […]

June 16, 2023