Archive for April, 2022

Hot and Cold – Summer Tire Performance and Cold Weather Cracking

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

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

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

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 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

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

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

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
Replacement Part Traceability with the Certified Service Mobile Toolbox

Replacement Part Traceability with the Certified Service Mobile Toolbox

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, […]

April 14, 2022
Exposed Trim at Front of Tonneau Cover

Exposed Trim at Front of Tonneau Cover

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 […]

April 14, 2022
April Service Newsletter from the Experts at GM TAC

April 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 […]

April 14, 2022
Replace Oil Cooler Components after Connecting Rod or Crankshaft Main Bearing Damage

Replace Oil Cooler Components after Connecting Rod or Crankshaft Main Bearing Damage

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 […]

April 14, 2022
New LPO Accessory Labor Operations Cover Calibration Programming

New LPO Accessory Labor Operations Cover Calibration Programming

GM has announced that new labor codes have been developed for installing PDI Dealer-Installed Factory Invoiced Options (LPO) that require calibration programming. (Fig. 1) Technicians should refer to the appropriate […]

April 5, 2022
Battery Testing Guidelines and Warranty Battery Replacement

Battery Testing Guidelines and Warranty Battery Replacement

When testing or charging a 12V battery in a vehicle that is in for service or is part of the dealership’s inventory, the EL-50313 Midtronics GR8 Battery Tester/Charger or EL-52800 […]

April 5, 2022
New Techline Connect Software Update Released

New Techline Connect Software Update Released

The March Techline Connect (TLC) software release includes several updates to aid navigation in the app as well as enhance screen formatting. The update should be downloaded automatically when logging […]

April 5, 2022