Replace, Don’t Repair, Coaxial Cables

Replace, Don’t Repair, Coaxial Cables

Many GM vehicles are equipped with Low Voltage Differential Signaling (LVDS), Universal Serial Bus (USB) and Coaxial (Coax) cables for a number of screen and camera connections as well as […]

April 13, 2021
Programming Radio Calibrations

Programming Radio Calibrations

When diagnosing an infotainment system, it’s important to remember that software and calibrations are not the same thing and are not interchangeable terms. Calibrations instruct the radio what to do […]

April 13, 2021
Vehicle Repairs and Product Assistance Claims

Vehicle Repairs and Product Assistance Claims

When a GM vehicle is involved in an incident that involves vehicle damage or possible property damage, dealerships (U.S.) may need to work with their respective Customer Assistance Center to […]

April 13, 2021
Mass Air Flow Sensor Performance

Mass Air Flow Sensor Performance

Some 2019-2021 Silverado and Sierra models equipped with the 5.3L V8 engine (RPOs L82, L84) or 6.2L V8 engine (RPO L87) may have an illuminated Check Engine MIL and DTC […]

April 13, 2021
Diesel Engine Rear Main Oil Seal

Diesel Engine Rear Main Oil Seal

Some 2020-2021 Silverado, Sierra; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 3.0L diesel engine (RPO LM2) may have an oil leak concern and DTC P06DD (Engine Oil […]

April 13, 2021
Loss of Window Motor Memory

Loss of Window Motor Memory

The front windows may drop enough to cause wind noise on some 2018-2021 Equinox and Terrain models. After driving the vehicle while the infotainment system is at a high volume […]

April 13, 2021
Vibration or Rough Idle in Drive or Park

Vibration or Rough Idle in Drive or Park

A rough idle or vibration at idle may be present with the transmission in Drive or Park on some 2019-2021 Silverado and Sierra models equipped with the 5.3L V8 engine […]

April 13, 2021
Internal Transmission Faults Not Serviceable at the Dealership

Internal Transmission Faults Not Serviceable at the Dealership

A Service Transmission message or a Service Engine Soon message may be displayed on the Driver Information Center of some 2020-2021 Corvettes equipped with the DCT TR9080 transmission (RPO M1L) […]

April 13, 2021
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