GM has announced an updated policy for refinishing aluminum wheels under warranty at U.S. dealerships on 2011-2021 passenger cars and trucks. (Fig. 1) Only cosmetic refinishing of wheels due to […]
Misfire DTCs P0300 (Engine Misfire Detected), P0302 (Cylinder 2 Misfire Detected) or P0305 (Cylinder 5 Misfire Detected) may be set on some 2016-2019 ATS; 2016-2020 CT6; 2016-2021 Camaro; 2017-2019 LaCrosse; […]
2020-2021 Blazers equipped with the 2.0L engine (RPO LSY) may have a humming or vibration sound coming from the front of the vehicle when driving at speeds over 50 mph […]
A pop sound may heard coming from the rear roof of the cab area on some 2019-2020 Silverado 1500 and Sierra 1500 models and 2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD […]
The latest software update (CH-47976-SWV14) for the CH-47976 Active Fuel Injector Tester (AFIT) has recently been released. The software update includes: 2021 model year and early 2022 model year software […]
After making repairs to the Dual Clutch Transmission (RPO M1L) on 2020-2021 Corvette models, including Shift Activation (SAV), Main Control Valve (MCV) or direct clutch replacement, the Transmission Control Module […]
A drive belt squeak or engine noise from the front of the engine may be noticed on some 2016-2019 ATS, CTS, Camaro; 2016-2020 CT6; 2017-2019 LaCrosse, Acadia; 2017-2021 XT5, Colorado, […]
Some 2020-2021 Corvette models may have multiple DTCs set in the Transmission Control Module (TCM). The DTCs may be caused by an internal transmission solenoid or switch sticking due to […]
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 […]
With the retirement of TIS2Web approaching, the Techline Connect team has received significant feedback from dealership technicians. As always, technicians’ comments are taken into account when developing and supporting all […]
Technicians using the GM Service Information (SI) will soon find updated Removal/Installation and Replacement procedures with more detailed steps and fewer procedure links to other SI documents. (Fig. 3) The […]
Some 2021 Express and Savana vans equipped with the 6.6L V8 engine (RPO L8T) may have a low battery charge after sitting for a short period of time. The low […]
The 2021 Cadillac Escalade features the automotive industry’s first OLED (Organic Light Emitting Diode) Infotainment System. With 38 inches (965 mm) of total diagonal display area, it has twice the […]
The Emission Reduction Fluid Tank heater may be faulty on some 2020 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500, Sierra 2500HD/3500HD; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the […]
2021 Express and Savana models equipped with the 4.3L V6 engine (RPO LV1) or 6.6L V8 engine (RPO L8T) may have a build list that includes a V14 auxiliary transmission […]
An exhaust odor in the cabin or in the engine compartment may be noticed on some 2020-2021 Silverado and Sierra models and 2021 Tahoe, Suburban, Yukon, and Escalade models, equipped […]
Some 2019-2021 Silverado, Sierra; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 5.3L V8 engine (RPO L84) or 6.2L V8 engine (RPO L87) may have a misfire condition […]
The new 2021 GM Service Technical College (STC) Course Catalog (U.S.) is now available on the Service Technician Training, Recruiting, Retention, and Recognition App on GlobalConnect and on GMSTC.com. The […]
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
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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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