TechLink – Page 36

Front Brake Squeal Sound During Light Brake Application

Some 2020-2022 Encore GX and 2021-2022 Trailblazer models may have a squealing sound originating from the front of the vehicle during light brake pedal application. (Fig. 5) The sound may […]

July 11, 2022 —

Common Customer Trailer-Side Faults When Using the Trailering App

The 2019-2022 Silverado 1500, Sierra 1500; 2020-2022 Silverado 2500HD/3500HD, Sierra 2500HD/3500HD; and 2021-2022 Tahoe, Suburban, Yukon and Escalade offer a number of systems designed to help make towing easy. (Fig. […]

July 11, 2022 —

Component Names for the Air Leveling and Electronic Suspension Control Systems

The Air Leveling Suspension (RPO F47) and the Electronic Suspension Control System (RPO Z95) are available on 2021-2022 Tahoe, Suburban, Yukon and Escalade models. When servicing these systems, it’s important […]

July 11, 2022 —

Intermittent Click Sound at the Front of the Vehicle

Some 2017-2019 Bolt EVs may have an intermittent click sound at the front of the vehicle and the ABS, traction control and/or StabiliTrack warning lamps may illuminate on the instrument […]

July 11, 2022 —

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

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

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

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

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

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

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

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

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

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 —