Warranty replacement of wheels, seat covers and cushions, outside mirror assemblies, steering wheels, and interior door trim requires GM pre-authorization before repairs are made (U.S.). The Pre-Repair Authorization (PRA) process […]
The Active Fuel Injector Tester (AFIT), R1234yf A/C Machine, Pico Scope NVH Tool, and TPMS and RF Tool are just a few of the special service tools that require occasional […]
Fluid may be noticed leaking from the front of some 2019 XTS, Impala and Acadia models equipped with the 6T70, 6T75 or 6T80 automatic transmission (RPO MHM, M7U, M7W, M7V). […]
Some 2019-2020 Blazer, Impala and Acadia models equipped with the 2.5L 4-cylinder engine (RPO LCV) and 2019-2020 Equinox and Terrain models equipped with the 2.0L 4-cylinder engine (RPO LTG) may […]
There may be several audio conditions, including loss of audio, loss of chime, loss of turn signal indicator sound, low or no audio from a speaker channel, or abnormal speaker […]
Some 2016-2019 Envision models may have a Service Driver Assist message displayed on the Driver Information Center along with an inoperative Lane Departure Warning actuator in the Safety Alert Seat […]
The Advanced Trailering System available on the 2019-2020 Silverado 1500 and 2020 Silverado HD (Fig. 18) and the ProGrade Trailering System available on the 2019-2020 Sierra 1500 and 2020 Sierra […]
The new trailering app (RPO U1D) (Fig. 23) available on the 2019-2020 Silverado 1500 and Sierra 1500 and the 2020 Silverado HD and Sierra HD uses the K68 Trailer Lighting […]
Technicians using the GM Service Information (SI) will soon find updated Removal/Installation and Replacement procedures (Fig. 1) with more detailed steps and fewer procedure links to other SI documents. The […]
The Next Generation Digital Vehicle Platform, GM’s all-new electronic platform that will power the next generation of GM models and systems, including electric vehicles, active safety systems, infotainment systems, and […]
Some 2017-2020 Bolt EV models may have a loss of propulsion, an illuminated Malfunction Indicator Lamp (MIL) and DTCs P0A3F (Drive Motor Position Sensor Circuit) and/or P1B03 (Drive Motor Position […]
The new 2020 GM Service Technical College (STC) Course Catalog (Fig. 12) is now available on the Service Technician Training, Recruiting, Retention, and Recognition App on GlobalConnect and on GMSTC.com. […]
The optional trailer-tow mirrors on 2020 Silverado HD and Sierra HD models feature a power folding function (RPO DWI) and an available power extending function (RPO DZC), which makes it […]
For 2020 Silverado 1500, Silverado 2500HD/3500HD, Traverse, Acadia, Sierra 1500, Sierra 2500HD/3500HD, XT4, XT5, and XT6 models equipped with Infotainment 3 systems (RPO IOR, IOS, IOT, IOU), technicians may no […]
GM Customer Care and Aftersales recently introduced the MAHLE TechPRO Professional Aftermarket Diagnostics application for diagnosing non-GM vehicles in U.S. dealerships’ used car departments and collision repair centers. (Fig. 16) […]
2015-2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks driven regularly in extreme cold climates may require use of upgraded power steering hoses. Extreme cold may affect the pliability of the power […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics from GM Brand Quality and Engineering covered in […]
Transmission Whine Sound
March Service Newsletter from the Experts at GM TAC
Vehicle Alignment and Super Cruise
Rear Axle Differential Lock Control Actuator Condition
Diesel Exhaust Fluid Supply Pipe Contamination
FSE Technician Recognition Awards – 1st Quarter 2024
Crankshaft Bearing Diagnosis
Convertible Top Water Leak
Power Tonneau Cover Tips
GM Service Know-How Emerging Issues
MDI 2 Advanced Setup Technical Tips Update
Fuel Feed Pipe Buzzing Sound
February Service Newsletter from the Experts at GM TAC
Exhaust Resonator Rattle
Heated Steering Wheel Operation During a Remote StartGM Dealer Equipment (GMDE)
TAC Newsletter March 2024
TAC Newsletter February 2024
Techline Connect Tips March 2023
The EL-52800 Diagnostic Charge Battery Station (DCBS) is the recommended and approved tool for diagnosing battery replacements and submitting battery warranty claims. And effective January 1, 2024, the DCBS (Fig. […]
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 […]
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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