The rear fascia gap near either tail lamp on some 2016-2018 Camaro models may be more noticeable in hot temperatures. (Fig. 14) The gap is due to a possible misalignment […]

Several injector timing-related DTCs may be set along with an illuminated Check Engine light on some 2017-2018 Silverado and Sierra models equipped with the 6.6L Duramax diesel engine (RPO L5P). […]

The Sliding Cam Valve Lift System (SCS) on the new 2.0L 4-cylinder, turbocharged engine (RPO LSY) in the 2019 XT4 delivers a combination of performance and efficiency with three distinct […]

GM’s global repair strategy for large wiring harnesses (body, engine, instrument panel, forward lamp, headliner, and truck chassis) is to repair/replace the components (cables, terminals, connectors, etc.) instead of replacing […]

Some 2016-2019 ATS, CTS, Camaro and 2017-2019 Colorado, Canyon, Acadia, LaCrosse, and XT5 models equipped with the 3.6L V6 engine (RPOs LGX, LGZ) and 2016-2019 CT6 models equipped with the […]

The Antilock Brake System (ABS) light may illuminate intermittently and a Service StabiliTrak message may be displayed on some 2018 Express and Savana vans equipped with dual rear wheels (RPO […]

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 this […]

The all-new 2019 XT4 (Fig. 1) is Cadillac’s first entry in the compact luxury SUV market. The 5-passenger SUV is available as a front-wheel drive (FWD) or all-wheel drive (AWD) […]

The 2019 XT4 is the first Cadillac to use electro-hydraulic braking assist, which enhances fuel economy and takes up less space under the hood compared to a traditional vacuum-assisted power […]

The electric parking brake (EPB) may be inoperative on some 2018 Acadia, Enclave, Traverse and XT5 models. The Service Park Brake warning lamp also may be illuminated. To apply the […]

The rear door may be hard to close on some 2015-2017 Colorado and Canyon extended cab models. In addition, there may be a rattle sound from the lower rear door […]

2019 Silverado 1500 and Sierra 1500 models equipped with infotainment system RPO IOT (Fig. 1) are the only models that will have an SD card for the navigation system. There […]

The all-new 2019 Silverado 1500 and Sierra 1500 offer two new V8 engines: the 5.3L V8 (RPO L84) and the 6.2L V8 (RPO L87). (Fig. 1) Fig. 1 These new […]

The supercharged 6.2L V8 engine (RPO LT5) in the 2019 Corvette ZR1 uses five charge air cooling radiators. Behind the front fascia, there are three charge air cooling radiators; one […]