Communication DTCs Set on 3.0L Duramax Diesel Engine

Communication DTCs Set on 3.0L Duramax Diesel Engine

Several communication DTCs may be set on some 2022 Silverado 1500, Tahoe, Suburban, Sierra 1500, Yukon and Escalade models equipped with the 3.0L Duramax diesel engine (RPO LM2). Along with […]

January 30, 2023
HFV6 Gen 2 Engine Timing Chain Installation

HFV6 Gen 2 Engine Timing Chain Installation

Proper timing chain installation on the High Feature V6 engine (RPO LGX, LGZ, LGY, LGW) requires confirming the location of the green-colored chain links. In order to get a proper […]

January 30, 2023
Front Axle Click Sound in 2WD

Front Axle Click Sound in 2WD

A squeak or click sound may be heard coming from the front of some 2019-2022 Silverado 1500, Sierra 1500; 2021-2022 Tahoe, Suburban, Yukon and Escalade models equipped with all-wheel drive/four-wheel […]

January 30, 2023
Side Blind Zone Alert Reset

Side Blind Zone Alert Reset

The Side Blind Zone Alert indicator on some 2021-2023 CT4, CT5, Escalade, Tahoe, Suburban and Yukon models equipped with Super Cruise (RPO UKL or UKL and 00U/02O) may not operate […]

January 30, 2023
January Service Newsletter from the Experts at GM TAC

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 […]

January 30, 2023
Maintaining Power to a Module Sent in for Warranty Analysis

Maintaining Power to a Module Sent in for Warranty Analysis

In order to help GM Engineering identify the root cause and troubleshoot some component drains or logic lockups on 2000-2023 GM passenger cars and trucks, it’s critical that power to […]

January 18, 2023
Transfer Case Actuator Alignment

Transfer Case Actuator Alignment

During diagnosis or repairs of the transfer case (RPO NQF) on some 2019-2023 Silverado MD 4500/5500/6500 models equipped with four-wheel drive, the transfer case learn procedure may not be completed […]

January 18, 2023
Sticking Charge Air Bypass Valve

Sticking Charge Air Bypass Valve

Some 2021-2022 Envision, CT4, CT5, XT4, XT5, XT6, Blazer and Acadia models equipped with the 2.0L 4-cylinder engine (RPO LSY) may have DTC P0299 (Engine Underboost) set in the Engine […]

January 18, 2023
New Models Using VIP Require the MDI 2

New Models Using VIP Require the MDI 2

The Vehicle Intelligence Platform (VIP) electrical architecture continues to power a growing number of new GM vehicles for the 2023 model year. The VIP architecture offers enhanced capacity and the […]

January 18, 2023
Service Power Steering Message Due to Coolant Temperature

Service Power Steering Message Due to Coolant Temperature

A Service Power Steering message may be displayed on the Driver Information Center on some 2017-2023 XT5, Acadia; 2018-2023 Enclave, Traverse; 2019-2023 Blazer; and 2020-2023 XT6 models. DTC P0128 (Engine […]

January 18, 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 takes a look at the role of the Field […]

January 18, 2023
New 2023 Dealer Infrastructure & Security Guidelines

New 2023 Dealer Infrastructure & Security Guidelines

The new GM Dealer Infrastructure & Security Guidelines (DISG) are now available to help dealers with the technology needed to ensure reliable data communications, including recommended personal computer (PC) specifications. […]

December 23, 2022
December Service Newsletter from the Experts at GM TAC

December 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 December GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

December 23, 2022
New 2023 STC Course Catalog Released

New 2023 STC Course Catalog Released

The new 2023 GM Service Technical College (STC) Course Catalog (U.S.) is now available. (Fig. 6) The new catalog can be accessed through the Service Technician Training, Recruiting, Retention, and […]

December 23, 2022