Archive for June, 2022

Installing HUMMER EV Accessories

Installing HUMMER EV Accessories

The 2022 HUMMER EV Pickup Edition 1 features a number of standard accessories, including assist steps, recovery hooks and a soft roll-up tonneau cover. (Fig. 1) There also are a […]

June 21, 2022
MDI Manager Software Update Splits MDI 1 and MDI 2 into Separate Applications

MDI Manager Software Update Splits MDI 1 and MDI 2 into Separate Applications

The Multiple Diagnostic Interface 1 & 2 (MDI/MDI 2) are designed to connect a vehicle to a host PC computer application for data transfer and Electronic Control Unit (ECU) reprogramming. […]

June 21, 2022
DEF Tank Heater and Wiring Harness Updates

DEF Tank Heater and Wiring Harness Updates

Several updates are now available to address Diesel Exhaust Fluid (DEF) tank, or Emission Reduction Fluid tank (Fig. 18), conditions on some full-size trucks and SUVs equipped with the 6.6L […]

June 21, 2022
Using R-99 or R-95 Diesel Fuel

Using R-99 or R-95 Diesel Fuel

GM Engineering has recently approved the use of renewable diesel, R-99 or R-95, for all 2006-2022 GM vehicles equipped with a diesel engine. (Fig. 25) Fig. 25 Renewable diesel (RD) […]

June 21, 2022
TCM DTCs Set on Vehicle Start Up

TCM DTCs Set on Vehicle Start Up

Some 2020-2022 Corvette models may have a Service Transmission message on the Driver Information Center (DIC), an illuminated Check Engine MIL and a squealing sound immediately after starting the engine. […]

June 21, 2022
June Service Newsletter from the Experts at GM TAC

June Service Newsletter from the Experts at GM TAC

The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the June GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

June 21, 2022