The new 2025 Escalade and first-ever all-electric 2025 ESCALADE IQ boast iconic design, interior craftsmanship and the latest automotive technology. Each of these luxury full-size SUVs offer a number of […]
Before returning the high-voltage battery (Fig. 6) of the 2023-2025 LYRIQ; 2024-2025 Blazer EV, Equinox EV, Silverado EV, Sierra EV; 2022-2025 HUMMER EVs; and 2022-2025 BrightDrop models, there are a […]
With rapidly changing technology being utilized throughout the dealership environment, the GM Dealer Infrastructure & Security Guidelines (DISG) have been updated to help dealers maintain reliable data communications, establish security […]
There are several reasons why a speed limitation may be in place on 2020-2025 Corvette models (Fig. 14), such as an active Teen Driver mode or the convertible folding top […]
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 […]
The 2025 Technician Excellence Program (U.S.) recognizes and rewards enrolled dealership technicians for achieving technical training certifications and meeting other service criteria. Program criteria include training achievements in the Center […]
The Mark of Excellence program (U.S.) recognizes the achievements, professionalism and commitment of GM service technicians as well as other dealership personnel. For the 2025 program, enrolled technicians who meet […]
Proactive Alerts, a feature of OnStar Advanced Diagnostics, are designed to help predict specific types of potential performance degradation based on current vehicle data. Several new Proactive Alerts have been […]
The 2025 ESCALADE IQ, the first-ever all-electric full-size SUV from Cadillac, redefines the luxury SUV experience with an Ultium Platform delivering a Cadillac-estimated 460 miles of range, vehicle-to-home bidirectional charging […]
There may be a vibration or rattle sound in the body of the vehicle on some 2025 Equinox models. The vibration or rattle may be more noticeable under light load, […]
The high-voltage (HV) battery in 2022-2025 HUMMER EV; 2023-2025 BrightDrop, LYRIQ; 2024-2025 Blazer EV, Equinox EV, Silverado EV and Sierra EV models requires updated Battery Energy Control Module (BECM) calibrations […]
Multi-Factor Authentication (MFA) — an identity verification process that requires at least two methods of authentication, such as a password and a temporary passcode, to verify a user’s identity — […]
If an error occurs when launching the Techline Connect (TLC) application, the first solution is often to try to restart TLC. If the application still does not start correctly, it […]
Electric Vehicles (EVs) feature a number of electronic control modules that may require software updates. These updates are important to not only resolve operating issues, but also to enhance vehicle […]
There may be a GCW Overweight message displayed on the Driver Information Center of some 2022-2025 Silverado 1500, Sierra 1500; and 2024-2025 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with […]
Due to a recent update of the Google Maps application, an issue may arise in which the infotainment system (RPO IOK, IVD, IVE) has a persistent “Offline” icon in maps […]
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 first look at the all-new 2025 Escalade […]
There may be low oil pressure in the 5.3L V8 engine (RPO L84) or 6.2L V8 engine (RPO L87) on some 2019-2024 Silverado 1500, Tahoe, Suburban, Sierra 1500, Yukon; and […]
The Diesel Exhaust Fluid (DEF) tank may appear to be empty shortly after beginning a towing trip or it may be difficult to properly fill the DEF tank on some […]
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 […]
A 2025 Full-Size SUV Action Center for U.S. dealerships has been established by the GM Technical Assistance Center (TAC) to provide feedback on the new 2025 Tahoe, Suburban, Yukon and […]
Techline Connect Moving to Microsoft Azure Platform — New Login Features
Techline Connect Browser Launch Update
Using the NACS DC Adapter to Access the Tesla Supercharger Network
Power Hood (eTrunk) Offers Several Open/Close Methods
Addressing Brake Noise Requires Regular Maintenance
2025 Battery Ratings Chart and Battery Maintenance Update
Long TCSC Hold Times – Counterfeit MDI Devices
Engine Coolant Leak from Water Pump
FSE Technician Recognition Awards – 3rd Quarter 2024
GM Service Know-How Emerging Issues
Techline Customer Support Center Introduces Dealer Case Management Support
Beware of Counterfeit Diagnostic Tools
New High-Voltage Insulating Glove Subscription Service Available Through GM Global Tools Website
2024 Model Year Engine Oil Capacities Chart
September Service Newsletter from the Experts at GM TACGM Dealer Equipment (GMDE)
TAC Newsletter November 2024
TAC Newsletter October 2024
Techline Connect Tips November 2024
The GM Tools and Equipment program recently introduced their latest tool organization program – the new GM Virtual Tool Crib (VTC). The Virtual Tool Crib application is designed to help […]
There are several Service Programming System (SPS) errors that can be resolved by following some basic steps, and do not require replacing the control module, on 2000-2025 GM models. No […]
Take a detailed look at a wide range of innovative features and advanced systems found on GM vehicles to gain a better understanding of proper operation. Each short video reviews how a feature works, highlights operating tips and shows ways to customize settings, if applicable.
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