GM studies indicate that restricted transmission oil flow is detrimental to the life of any automatic transmission. Plugged oil coolers and oil cooler line restrictions cause insufficient transmission lubrication and […]
The Positive Crankcase Ventilation (PCV) system and other components that affect emissions, but do not turn on the Check Engine lamp if there is a malfunction, are required by the […]
The Check Engine MIL may be illuminated and DTC P20EE (NOx Catalyst Efficiency Below Threshold) may be set on some 2017-2018 Silverado and Sierra models equipped with the 6.6L Duramax […]
The latest update to the GM Global Electronic Parts Catalog (EPC) includes several new features that make it easier and more convenient to search for parts and to quickly find […]
At TechLink, we cover a wide range of GM service topics, from the latest diagnostic and technical repair information to new model features, special tools and more. It’s our mission […]
Did you know the new Dealer Case Management (DCM) system allows U.S. GM dealership service technicians to create, view, and update GM Technical Assistance Center (TAC) cases in real-time? DCM […]
A new version (18.1.161) of the GDS2 core software has been released recently. The update includes numerous software bug fixes. To download the software update, click the GDS 2 […]
GM has recently released a new refrigerant PAG (Polyalkylene Glycol) oil (Fig. 7) specifically engineered to service GM vehicles built with belt-driven air conditioning (A/C) compressors that use the environmentally-friendly […]
The cooling system surge tank for 2017 Silverado and Sierra models equipped with the 6.6L Duramax diesel engine (RPO L5P) features a new design with two tank caps. The fill […]
The all-new 2018 GMC Terrain is available with a variety of new features that may be unfamiliar to some customers, who may bring their vehicle into the dealership for service […]
The GM Technical Assistance Center, or TAC, (U.S.) has established Action Centers for the 2018 Cadillac CT6 equipped with Super Cruise (RPO UKL) (Fig. 19) and the 2018 Buick Enclave. […]
Repair or Replace? New Program Identifies 9T65 Transmission Replacements
Inspection/Maintenance Test DTCs Now Permanent DTCs
Run Techline Connect as Admin to Receive Updates Automatically
Properly Lifting the Corvette
DEF Pump Unable to Build Pressure After Replacement
Engine Oil Pump Pressure Control
Quarter Panel Rattle Sound
Removal of Corvette Z51 Spoiler
Disabling Systems After Pickup Box Removal
Proactive Alerts – Updated Service Procedures and Warranty Information
UPDATE: Vehicle Intelligence Platform Announced
2020 Corvette TAC Action Center
Techline Connect Now Available on the GlobalConnect App Center
Intermittent Parasitic Battery Draw Below 40° F/4° C
Front Fender and Fascia Realignment
Questions on Associated Accessories?
GM Service Know-How Emerging Issues
Corvette Track Prep Requirements
Fuel Injection & Cooling System Tools
TechPRO Professional
Aftermarket Diagnostics
Tips for Warranty Reprogramming Events
Techline Connect Setup
for Updates
The new GM ToolNet special service tools inventory management application is now available to GM dealerships in the U.S. The Canadian application launches on April 20. To access the site, […]
Enter a few keywords in the Search box of the Service Information (SI), click the Search button, and all related results are shown. (Fig. 1) In some cases, depending on […]
GM models feature a variety of technology and new systems that may be unfamiliar to technicians and service consultants in GM dealerships. Following are several videos highlighting new features to […]
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