The new 2020 GM Service Technical College (STC) Course Catalog (Fig. 12) is now available on the Service Technician Training, Recruiting, Retention, and Recognition App on GlobalConnect and on GMSTC.com. […]

The optional trailer-tow mirrors on 2020 Silverado HD and Sierra HD models feature a power folding function (RPO DWI) and an available power extending function (RPO DZC), which makes it […]

For 2020 Silverado 1500, Silverado 2500HD/3500HD, Traverse, Acadia, Sierra 1500, Sierra 2500HD/3500HD, XT4, XT5, and XT6 models equipped with Infotainment 3 systems (RPO IOR, IOS, IOT, IOU), technicians may no […]

GM Customer Care and Aftersales recently introduced the MAHLE TechPRO Professional Aftermarket Diagnostics application for diagnosing non-GM vehicles in U.S. dealerships’ used car departments and collision repair centers. (Fig. 16) […]

2015-2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks driven regularly in extreme cold climates may require use of upgraded power steering hoses. Extreme cold may affect the pliability of the power […]

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 […]

When servicing power folding top conditions on 2004-2009 XLR; 2005-2010 G6; 2005-2019 Corvette; 2011-2020 Camaro; and 2016-2019 Cascada convertible models (Fig. 1), it’s important to understand what is happening with […]

Some 2019-2020 Silverado 1500 and Sierra 1500 models equipped with the 5.3L or 6.2L V8 engine (RPOs L82, L84, L87) may have a vibration or drone sound around 40 mph […]

The newest service tool for GM Dealerships will help in organizing and managing their special service tools inventory. GM ToolNet, an innovative asset management application, will be launched by GM […]

A 2020 Silverado HD or Sierra HD equipped with the 6.6L V8 engine (RPO L8T) may have a rough idle or reduced engine power in very cold climates (-10°F or […]

After replacing the transmission, control valve solenoid body, or Transmission Control Module on 2017-2019 Cruze; 2017-2020 Malibu; 2018-2019 LaCrosse; 2018-2020 Enclave, Regal, Traverse, Terrain; 2019-2020 Envision, XT4, Blazer; and 2020 […]

The Surround Vision camera system (RPO UV2) available on a variety of GM models displays an overhead view of the area surrounding the vehicle, along with front or rear camera […]

The Park Assist Control Module (PACM) may fall off the Controller Area Network (CAN) bus when other control modules are serviced on some 2020 CT5 models due to incorrect PACM […]