Wheel Drive Shaft Damage
Damage to the wheel drive shaft threads (Fig. 1 and 2) may occur if power tools are used to remove the wheel drive shaft nut on some 2021-2023 XT5, XT6, […]
Shift Concerns on 8-Speed Transmissions
The 8-speed automatic transmissions (RPO M5N, MNU, M5U, M5X, MHA, M5T, MQE, MQD) in some 2015-2018 Corvette; 2015-2020 Escalade, Yukon; 2015-2023 Silverado 1500, Sierra 1500; 2016-2018 CTS; 2016-2019 ATS, CTS; […]
Loose Connection at Connector X175
A number of powertrain DTCs may be set along with an illuminated Check Engine MIL on some 2023-2024 Colorado, Canyon; 2024 Silverado 1500 and Sierra 1500 models equipped with the […]
November 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 November GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
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 new 2024 Corvette E-Ray. […]
2024 Mark of Excellence Program Enrollment Extended
The Mark of Excellence program (U.S.) recognizes the achievements, professionalism, and commitment of GM dealership personnel, including those in the service department. Service technicians enrolled in the 2024 program who […]
12-Volt Battery Service in EVs
GM Electric Vehicles (EV), such as the LYRIQ, Blazer EV and Silverado EV, are equipped with a high-voltage battery system for vehicle propulsion and a 12V battery system that is […]
Front Fascia and Headlamp Adjustment
The paint may have chipped or peeled on the front fascia or fender-to-fascia body seam on some 2020-2024 Corvettes. (Fig. 9) The paint chip may be due to the headlamp […]
October 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 October GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
Inoperative Front Heated Seat Switch Indicator Lights
It may appear that the front heated seats do not turn on in some 2023-2024 Silverado and Sierra trucks. When a front heated seat is turned on, any combination of […]
Unable to Complete System Calibration for Trailering Features
There may be some difficulty in setting up several trailering features on some 2024 Silverado 1500, Silverado 2500/3500, Sierra 1500 and Sierra 2500/3500 models equipped with the Surround Vision Cameras […]
FSE Technician Recognition Awards – 3rd 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 […]
3rd-Row Power Folding Seat Switch Connection
Some 2021-2023 Tahoe, Suburban, Yukon and Escalade models may have a low battery or no engine crank condition after the vehicle sits for a day or more. Checking for a […]
Missing Tow Eye Access Cover
During the Pre-Delivery Inspection (PDI) on some 2024 Encore GX, Envista, Trailblazer and Trax models, it may be noticed that the front or rear bumper tow eye access cover (Fig. […]
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 timing belt replacement on the 2.8L diesel engine. […]
New Techline Connect Browser Launch Makes Signing In Easy
A new feature will make logging into Techline Connect easier and quicker for users. Previously, Techline Connect had its own unique login, using the Techline Connect desktop icon, and users […]
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Previous Articles
Corvette Transmission Canister Filter and Maintenance Information
M1L Dual Clutch Transmission Case Design Update
Starter or Flywheel Noise and Fuse Block Matching
Trailer Brake Control Module Update
Diagnosing Road Force
2024 Battery Ratings Chart and Battery Maintenance Update
Battery Testing in EVs
Multifunction Inner Tailgate Disabling Procedure
Front-view Grille Camera Washer Nozzle
September Service Newsletter from the Experts at GM TAC
9-Speed Transmission Oil Level Control System Changes
Front Short Range Radar Module Bypass Jumper Connector
Battery State of Charge Prevents Radio Programming
New Techline Connect Software Update Released
GM Service Know-How Emerging Issues
GM Dealer Equipment (GMDE)
TAC Newsletter November 2023
TAC Newsletter October 2023
Techline Connect Tips March 2023
