The 9T65 9-speed automatic transmission (RPO M3V, M3W) replacement pilot program (U.S.) for the 2018-2022 Enclave, Traverse; 2019-2022 Blazer; and 2020-2022 Acadia, XT5, and XT6 models concluded on September 30, […]
When completing the programming procedures for updating the infotainment system software on vehicles equipped with an Infotainment 3 system (RPO IOR, IOS, IOT, IOU, IOV), SPS (Service Programming System) and/or […]
Concerns about mobile device connections – Apple and Android –on a vehicle equipped with an Infotainment 3 system (RPO IOR, IOS, IOT, IOU, IOV) can be difficult to reproduce and […]
When performing transmission repairs on 2016-2019 Silverado and Sierra models and 2015-2020 Tahoe, Suburban and Yukon models equipped with the 6L80 6-speed automatic transmission (RPO MYC) for harsh shift, delayed […]
Some 2021 Silverado 1500 and Sierra 1500 trucks equipped with the 5.3L V8 (RPO L84) and 10L80 10-speed automatic transmission (RPO MQB), excluding models with RPO YK9, may have a […]
A new software update (DCAG1-33-24) is now available for the EL-52800 Diagnostic Charge Battery Station (DCBS). (Fig. 12) All DCBS units should be updated to the latest software version to […]
A pop sound may be heard under heavy acceleration on some 2021-2022 Encore GX and Trailblazer models equipped with the 1.2L engine (RPO LIH). In addition, one or more of […]
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 […]
When making vehicle repairs to or near the Supplemental Inflatable Restraint (SIR) system, technicians always need to consider the consequences. Even during repairs to components that are not directly connected […]
The convertible top may not lower intermittently on some 2020-2021 Corvettes. DTC B19E4 (Hard Top Locked Closed Signal) SYM64 also may stored in history. SYM64 indicates that the folding top […]
The door locks may become inoperative and several communication DTCs (U codes) may set on some 2017-2022 Acadia, XT5; 2018-2022 Enclave, Traverse; 2019-2022 Blazer; and 2020-2022 XT6 models. Other conditions […]
Diagnosing front seat movement conditions on 2016-2022 Malibu and 2019-2022 XT4 models requires verifying the operation of the seat adjuster track. If there are issues with fore/aft movement, binding or […]
After installing a number of select GM Genuine Accessories (Fig. 16), a calibration update from the Techline Customer Support Center (TCSC) is required in order to complete the installation properly. […]
Some 2016-2019 Volt models may display a Speed Limited to X MPH or Reduced Propulsion Power message on the Driver Information Center (DIC) and limited vehicle propulsion. (Fig. 18) These […]
Several new accessory wheel lock nuts with new designs will be available on some 2022 models. The new design wheel lock nuts, including chrome locks (RPO SFE) (Fig. 20) and […]
GM Engineering is conducting transmission filter inspections on 2020-2021 Corvette models (U.S. only). The Tremec DCT TR9080 dual clutch transaxle (RPO M1L) features a transmission cartridge filter (Fig. 24) that […]
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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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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