After replacement or programming the amplifier on some 2015-2017 Silverado, Tahoe, Suburban, Sierra, Yukon, Escalade and 2014 Silverado 1500 and Sierra 1500 models equipped with infotainment system RPO IO5, IO6 […]
A side-by-side view of the speed limit icon and digital speedometer may not be available on the Driver Information Center on 2017 Colorado and Canyon models equipped with the RPO […]
Customers who have upgraded to a new smartphone may no longer be able to wirelessly charge their device in some 2015-2016 ELR; 2015-2017, Volt, Tahoe, Suburban, Yukon, Escalade; 2015-2018 Colorado, […]
The latest GM Dealer Infrastructure Guidelines are now available on the GM Dealer Equipment website at www.gmdesolutions.com. Select the Dealer Services tab and then the links to Techline IT Solutions […]
Do not use the GE-52098 Coolant System Pressure Test Adapter when servicing the cooling system on 2017-2018 Silverado and Sierra models equipped with the 6.6L Duramax diesel engine (RPO L5P). […]
The Active Fuel Injector Tester (AFIT) Spark Ignited Direct Injection (SIDI) Diagnostic Kit, essential special tool CH-47976-500A, was released several years ago to test fuel injectors on port and direct […]
10218.05V – Emerging Issues May 10, 2018 The latest service topics from GM Brand Quality and Engineering are covered, including replacement of the Corvette convertible top cover (Fig. 11) and […]
The latest update to the GDS2 core software (Version 20.0.18400) in TIS2Web, released April 23, 2018, includes changes to the VIN field on the Vehicle Selection screen. After updating the […]
The appearance of white powder below the air conditioning lines in the engine compartment may be noticeable on some 2017-2018 Colorado and Canyon models. (Fig. 8) Fig. 8 The powder […]
The Digital Map Module (DMM) used in the Super Cruise system on the 2018 CT6 (Fig. 1) determines the vehicle’s position and localization and communicates navigational and predictive data of […]
The Super Cruise™ system available on the 2018 Cadillac CT6 automatically steers the vehicle when driving on a limited-access freeway, allowing drivers the convenience of hands-free driving. (Fig. 6) Because […]
When updating the Active Fuel Injector Tester (AFIT) (CH-47976) software, some users may receive a notice about the AFIT USB cable (CH-47976-3) that is used to connect the Main Control […]
The climate controls pop-up display may show an incorrect temperature setting on some 2018 Terrain models. The Heating, Ventilation and Air Conditioning (HVAC) temperature setting shown on the temperature control […]
The radio/tuner, radio control/display/Integrated Center Stack (ICS) and Human Machine Interface (HMI) have been placed on restriction for many 2018 GM models. If any of these parts need to be […]
Safety Arc-Rated Personal Protection Equipment for Electric Vehicles
Engine Oil Capacities Chart for the 2026 Model Year
2026 Corvette ZR1X TAC Action Center
Blank Screen Display Diagnostic Tips
Harsh Garage Shift into Drive or Reverse
Make a Reservation to Meet with Your FSEs in 2026
GM Introduces Digital Key, Offering Convenience and Easy Access
Key Cards Put Vehicle Access in Your Wallet
New 2026 Corvette ZR1X Delivers Twin-Turbo AWD Hypercar Performance
MDI 2 Manager Update Adds Support for New Wireless Dongles
Latest CX Connect Update Delivers Streamlined Operation and Enhanced Search Functions
GM Service Know-How Emerging Issues
Engine Control Module Diagnosis and ECM Part Restriction
Front Brake Caliper Sound and Uneven Pad Wear
3rd-Row Seat Switch Diagnosis
Check Ground Terminals for Transmission Fluid Temperature Sensor Circuit Condition
December Service Newsletter from the Experts at GM TAC
FSE Technician Recognition Awards – 4th Quarter 2025DCA-8000
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TAC Newsletter February 2026
TAC Newsletter January 2026
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
Safety Arc-Rated (AR) Personal Protection Equipment (PPE) is recommended to be used by technicians when servicing some high-voltage battery packs under certain scenarios on GM electric vehicles. The PPE that […]
GM diagnostic strategy does not support the practice of swapping control modules during the course of diagnosis or to expedite a repair. Features in today’s vehicles are increasingly software configurable. […]
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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