Mismatched Replacement DEF Tank Harness Connector
Prior to replacing the Diesel Exhaust Fluid (DEF) tank on some 2020-2021 Silverado and Sierra models and 2022 Silverado 1500 LTD and Sierra 1500 Limited models, equipped with the 3.0L […]
Prior to replacing the Diesel Exhaust Fluid (DEF) tank on some 2020-2021 Silverado and Sierra models and 2022 Silverado 1500 LTD and Sierra 1500 Limited models, equipped with the 3.0L […]
The tailgate latch handle may become disengaged from the tailgate (Fig. 11) on some 2019-2021 Silverado 1500, Sierra 1500; 2022 Silverado 1500 LTD, Sierra 1500 Limited; and 2022 Silverado 1500 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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, […]
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 […]
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 […]
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 […]
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 […]
Replacement Part Traceability (RPT) is a new dealer process to document and track critical part serial numbers via the Certified Service Mobile Toolbox (CSMT) application. A field action, service bulletin, […]
Some 2021 Silverado 1500, Sierra 1500; 2022 Silverado 1500 LTD and Sierra 1500 Limited models equipped with the accessory tonneau cover (RPO VPB) may have the trim exposed at the […]
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 […]
If a gasoline engine is being replaced on a 2000-2022 GM passenger car or truck due to a connecting rod or crankshaft main bearing failure (Fig. 27), there are several […]