The air conditioning system may be blowing warm air on some 2017-2019 Colorado and Canyon models. In some cases, the A/C evaporator may be freezing up. There also may be […]

There may be a number of electrical conditions present on some 2018-2020 Equinox and Terrain models. The conditions may include illuminated warning lamps on the instrument cluster, a Service Transmission […]

A rear brake squeal sound may be heard on some 2017-2019 XT5, Acadia (VIN N); 2018 Enclave, Traverse, Acadia; and 2019 Blazer models. The sound may be caused by the […]

Some 2019 Silverado 1500, Sierra 1500; and 2020 Silverado 2500/3500 HD and Sierra 2500/3500 HD models may have a poor or degraded Bluetooth call performance heard by the person on […]

GM is expanding the mileage of Super Cruise-enabled roads to include over 70,000 additional miles (112,000 additional km) by the end of 2019, bringing the total number of Super Cruise-enabled […]

The latest software update (CH-47976-SWV11) for the CH-47976 Active Fuel Injector Tester (AFIT) has recently been released. The new update adds 2020 model year applications (as of July 24, 2019). […]

The recently released GM Dealer Infrastructure Guidelines (DIG) have been updated with several changes for recommended dealership infrastructure equipment. The DIG includes guidelines that are organized in Good, Better, and […]

Active Fuel Management (AFM) or Dynamic Fuel Management (DFM) is available on a number of recent GM models to help improve fuel economy, including 2014-2019 Corvette, Silverado LD, Sierra Limited; […]

Several brake system conditions that may be found on some 2016-2019 Volt and Malibu Hybrid (RPO HP4) models could be related to the hydraulic components. Be sure to not overlook […]

Some 2019 Silverado and Sierra models equipped with the 2.7L 4-cylinder engine (RPO L3B) may have an engine will not crank condition. If this condition is found and the starter […]

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 […]

The new 2.7L turbocharged 4-cylinder engine (RPO L3B) available on 2019-2020 Silverado 1500 (LT and RST models) and Sierra 1500 (SLE and Elevation models) offers capability and efficiency in a […]

Smart motors, switches, and sensors that use Local Interconnect Network (LIN) buses can be found on many 2014-2020 GM passenger cars and trucks. The LIN bus consists of a single […]