Programming with the Vehicle Intelligence Platform

Programming with the Vehicle Intelligence Platform

GM’s new Vehicle Intelligence Platform, or VIP, currently used on 2020-2022 Corvette, CT4, CT5 and 2021-2022 Tahoe, Suburban, Yukon, Escalade and Envision models, offers increased capacity and the ability to […]

March 30, 2021
Service Front Suspension Lift System Message

Service Front Suspension Lift System Message

Some 2020-2021 Corvettes may display a Service Front Suspension Lift System message on the Driver Information Center (DIC). DTCs C103C (Left Front Strut Position Sensor Signal) and/or C103E sym64 (Right […]

March 30, 2021
Torque Converter Clutch Shudder under Light Throttle Acceleration

Torque Converter Clutch Shudder under Light Throttle Acceleration

Some 2019-2020 Colorado and Canyon models equipped with the 8L90 8-speed automatic transmissions (RPO M5T) – VIN breakpoint from March 1, 2019 to End of Production – may have a […]

March 30, 2021
Latest EL-50332 EV Battery Service and Depowering Tool Software Released

Latest EL-50332 EV Battery Service and Depowering Tool Software Released

Software update version 10 for the EL-50332 EV/HEV Battery Service and Depowering Tool was recently released and is available through the Special Tools and Software Updates link in GM GlobalConnect. […]

March 30, 2021
Twisted Transmission Cooler Line

Twisted Transmission Cooler Line

A harsh shift, shudder, surge or stall condition may be present on some 2021 Silverado, Tahoe, Suburban, Sierra, Yukon, and Escalade models equipped with the 6L80 or 6L90 6-speed automatic […]

March 30, 2021
Poor Heater Performance

Poor Heater Performance

There may be poor heater performance from the driver-side HVAC vents on some 2019-2021 Silverado and Sierra models and 2021 Tahoe, Suburban, Yukon and Escalade models. In some cases, the […]

March 30, 2021
Corroded ECM Connector Terminals

Corroded ECM Connector Terminals

2013-2019 ATS models equipped with the 2.0L 4-cylinder engine (RPO LTG) or 2.5L 4-cylinder engine (RPO LCV) may have a crank, no start condition with an intermittent Check Engine MIL […]

March 30, 2021
Changes to the AFM and DFM Feature on 2021 Silverado 1500 and Sierra 1500

Changes to the AFM and DFM Feature on 2021 Silverado 1500 and Sierra 1500

Some 2021 Silverado 1500 and Sierra 1500 trucks equipped with the 5.3L V8 engine (RPO L82) and 6L80 6-speed automatic transmission (RPO MYC) or the 5.3L V8 engine (RPO L84) […]

March 30, 2021
GM Service Know-How Emerging Issues

GM Service Know-How Emerging Issues

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 […]

March 30, 2021
Tips for Over-The-Air Software Programming

Tips for Over-The-Air Software Programming

Over-the-Air (OTA) software updates (Fig. 1) that are pushed to vehicles remotely continue to expand in frequency and use on GM models. Vehicles using the Global A electrical architecture can […]

March 12, 2021
9T65 Transmission Replacement Pilot Program Update

9T65 Transmission Replacement Pilot Program Update

Feedback on the pilot program for replacing the 9T65 9-speed automatic transmission (RPO M3V, M3W) (Fig. 6) instead of making internal repairs that is currently taking place at all GM […]

March 12, 2021
Whining/Groaning Sounds Due to Front Intermediate Shaft Fretting

Whining/Groaning Sounds Due to Front Intermediate Shaft Fretting

Some 2016-2020 CT6 and 2017-2019 ATS and CTS models may experience a fretting condition. This condition may cause a whining, whistle, squeaking or groaning sound during low-speed driving maneuvers (up […]

March 12, 2021
FSE Technician Recognition Awards – 1st Quarter 2021

FSE Technician Recognition Awards – 1st Quarter 2021

The GM Field Service Engineer (FSE) Technician Recognition Awards (U.S.) celebrate the skill and dedication of dealership technicians who have recently worked with FSE’s on challenging repairs. Technicians at GM […]

March 12, 2021
Latest Diagnostic Charge Battery Station Software Update Released

Latest Diagnostic Charge Battery Station Software Update Released

A new software update (DCAG1-32) is now available for the EL-52800 Diagnostic Charge Battery Station (DCBS). (Fig 16) The DCBS replaces the EL-50313 Midtronics GR8 Battery Tester/Charger and is available […]

March 12, 2021
EVAP Testing Port Modification

EVAP Testing Port Modification

The EVAP line connection style has changed on the 2020-2021 Corvette equipped with the 6.2L V8 engine (RPO LT2). If a vehicle requires the EVAP system to be tested for […]

March 12, 2021
No Transmission Movement After Valve Body Replacement

No Transmission Movement After Valve Body Replacement

There may not be any transmission movement after replacing the transmission valve body on some 2015-2017 Escalade, Yukon Denali; 2015-2019 Corvette; 2015-2021 Silverado, Sierra; 2016-2018 CT6; 2016-2019 ATS, CTS; 2016-2021 […]

March 12, 2021
Head-Up Display Image Not Level

Head-Up Display Image Not Level

The Head-Up Display (HUD) image (RPO UV6) on some 2020-2021 Acadia models (Fig. 21) may be tilted or not level when displayed on the windshield. The tilted image may be […]

March 12, 2021