Archive for June, 2022

Achieving Maximum Results in the Technician Excellence Program

Achieving Maximum Results in the Technician Excellence Program

In the first quarter of the Technician Excellence Program (U.S.), more than 9,000 enrolled technicians earned rewards. The first quarter payouts are scheduled for the week of July 18th.   […]

June 30, 2022
Hood Ajar Message from Coolant Contamination

Hood Ajar Message from Coolant Contamination

There may be a Hood Ajar message displayed on the Driver Information Center on some 2014-2020 Impala models with the hood completely closed. The Check Engine MIL may be illuminated […]

June 30, 2022
Rearview Camera Display Affected by Coaxial Cable Conditions

Rearview Camera Display Affected by Coaxial Cable Conditions

The Rearview Camera may show a black or blue screen and a triangle icon (Fig. 7) when the vehicle is in Reverse on some 2019 LaCrosse; 2019-2020 CT6; 2019-2022 XT4, […]

June 30, 2022
DPF Regeneration Odors

DPF Regeneration Odors

The Diesel Particulate Filter (DPF) on the 3.0L Duramax diesel engine (RPO LM2) and 6.6L Duramax diesel engine (RPO L5P) available on 2019-2022 Silverado 1500, Sierra 1500; 2020-2022 Silverado 2500/3500, […]

June 30, 2022
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 […]

June 30, 2022
Installing HUMMER EV Accessories

Installing HUMMER EV Accessories

The 2022 GMC 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 […]

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 […]

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