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. […]
Programming Radio Software – Check the Build Number
Top XFuel Earners Recognized as Mark of Excellence Xccelerate Pilot Program Ends
Interior Door Handle Replacement
GE-52250 PowerSmoke Diagnostic Leak Detector Warranty Upgrade (U.S.)
Air in the Cooling System
Speed Limited Due to Low Transmission Fluid
Cleaning and Disinfecting Infotainment Screens
GM Service Know-How Emerging Issues
Uneven or Leaning Air Ride Adaptive Suspension
Configuring Driver Assistance Systems
Latest Dealer Infrastructure Guidelines Released for 2021
Rear Axle Clunk Sound
Sunroof Drain Hose Extensions
Knock Sensor Inspection
Exhaust Charge DTC Diagnostics
Transmission Shift Conditions
Installing a Rearview Camera KitCorvette Track Prep Requirements
Laptop & MDI 2 Bundle Promotion
TechPRO Professional
Aftermarket Diagnostics
Tips for Warranty Reprogramming Events
Techline Connect Setup
for Updates
The EL-52545 TPMS and RF tool offers the ability to quickly identify a key fob (Fig. 1), making it easy to match the fob with a vehicle in the dealership’s […]
When 2018-2021 GM models equipped with an Infotainment 3 System (RPO IOR, IOS, IOT, IOU, IOV) (Fig. 26) come into the dealership with various system concerns – the radio display […]
The GMC Yukon/XL with the available Rear Seat Media system – which features high-definition entertainment using two touchscreen displays offers the ability to...
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