Aero Shutter Humming Sound
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 […]
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 […]
The software on many 2018-2021 GM models equipped with an Infotainment 3 System (RPOs IOR, IOS, IOT, IOU, IOV) (Fig. 1) can be updated over the air to the vehicle […]
The Xccelerate mobile application, launched as a pilot program in the 2020 Mark of Excellence (MOE) program (U.S.), has concluded. The interactive Xccelerate app provided technicians with more opportunities to […]
The chrome may be starting to peel off the interior door handle on some 2016-2020 Camaro models. (Fig. 9) The chrome separation may be noticed at the parting line of […]
The GE-52250 PowerSmoke Diagnostic Leak Detector is a GM Essential Tool that can be used to help find induction and exhaust system leaks on 2010-2020 GM models equipped with a […]