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
GM Loan Tool Program Updates Tool Returns

GM Loan Tool Program Updates Tool Returns

The GM Loan Tool Program (LTP) has updated several policies recently to help address the shipping and administrative costs of the program. These changes included an increase in the annual […]

December 16, 2022
Latest Techline Connect Tips Shared by the TCSC

Latest Techline Connect Tips Shared by the TCSC

The Techline Customer Support Center (TCSC) has released their latest tips for Techline Connect and the Service Programming System. To get the most out of Techline Connect (TLC), check the […]

December 16, 2022
Intake Camshaft Sliding Lobe Pack DTCs

Intake Camshaft Sliding Lobe Pack DTCs

In cold ambient conditions (10°F / –12°C), DTCs P30C3 and/or P30BF, P30C7 and P30CB may set on some 2019-2022 Silverado, Sierra; and 2020-2022 CT4 models equipped with the 2.7L engine […]

December 16, 2022
New System Reset and Connector Reconnect Labor Codes

New System Reset and Connector Reconnect Labor Codes

GM Brand Quality has introduced a new labor code for 2023 passenger cars and trucks to help isolate instances where a customer’s concern is remedied when a technician resets the […]

December 16, 2022
DTC Sets After Turbocharger Replacement

DTC Sets After Turbocharger Replacement

After the replacement of the turbocharger on some 2020-2023 Encore GX and 2021-2023 Trailblazer models equipped with the 1.2L engine (RPO LIH), DTC P0234 (Engine Overboost) may set in the […]

December 16, 2022
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 testing diesel fuel for DEF contamination. (Fig. 15) […]

December 16, 2022