TechLink – Page 39

May 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 April GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

May 16, 2022 —

AFIT Adapter Cable Identification and Vehicle Application Chart Update

The Active Fuel Injector Tester (AFIT), essential tool CH-47976, is designed to test fuel injectors on port and direct injected engines going back to the 1996 model year. As new […]

May 10, 2022 —

Air Conditioning Odor After Auto Stop

A strong odor may be noticed coming from the HVAC vents on some 2020-2022 Equinox and Terrain models when the air conditioning is on. (Fig. 5) The odor may be […]

May 10, 2022 —

Abnormal Engine Tapping Sound

An abnormal engine tapping sound may be heard on some 2019-2022 Silverado and Sierra models equipped with the 2.7L engine (RPO L3B). The sound may be heard from the cam […]

May 10, 2022 —

Unable to Open Convertible Top Due to Unseated Access Hole Plug

Some 2020-2022 Corvette Convertible models may have a power folding top that may not open. DTC B19E1 (Hard Top Stowed Signal) may be set. If the folding top will not […]

May 10, 2022 —

New 2022 Engine Oil Capacities Chart, Adds Filter Specs

The new TechLink Engine Oil Capacities chart for the 2022 model year is now available under the Reference Chart menu. The chart includes engine, RPO, specifications (liters and quarts), oil […]

May 10, 2022 —

Hot and Cold – Summer Tire Performance and Cold Weather Cracking

Many GM performance models are equipped with three-season performance tires, commonly referred to as “summer tires.” (Fig. 1) These high-performance tires have a special tread and compound that are optimized […]

April 29, 2022 —

Brake Fluid Leak in the Center of the Vehicle

There may be a brake fluid leak at the center of some 2018-2019 Express and Savana vans. There also may be a tapping or knocking sound heard during turns. These […]

April 29, 2022 —

Engine-Related Shudder Concerns

A shudder or surge may be felt when driving at a steady speed on some 2014-2022 Corvette, Silverado, Sierra; 2015-2022 Tahoe, Suburban, Yukon, Escalade; 2016-2022 Camaro; 2020-2022 Silverado HD, Sierra […]

April 29, 2022 —

Overfilled Engine Coolant Reservoir with Discolored Coolant

Some 2021-2022 Silverado, Sierra, Tahoe, Suburban, Yukon and Escalade models equipped with the 2.7L engine (RPO L3B) or 3.0L diesel engine (RPO LM2) and the 10L80 automatic transmission (RPO MQB, […]

April 29, 2022 —

DTC P06DD Set after Engine Oil Change

DTC P06DD (Engine Oil Pressure Control Solenoid Valve Performance) may set during the first engine start up immediately following an engine oil and filter change on some 2019-2022 Silverado and […]

April 29, 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 […]

April 29, 2022 —

New GMC HUMMER EV Pickup – An All-Electric Supertruck

As the first GM truck designed around an electric vehicle (EV) propulsion system, the all-new 2022 GMC HUMMER EV Edition 1 Pickup (Fig. 1) offers some unique performance capabilities, including […]

April 14, 2022 —

Ultium Battery System Powers the GMC HUMMER EV Pickup

The all-new 2022 GMC HUMMER EV Edition 1 Pickup is powered by an Ultium 24-module battery system that boasts a GM-estimated 1,000 horsepower and a combined axle torque of 11,500 […]

April 14, 2022 —