The GM Service Information is updated daily in order to provide technicians with the latest, most accurate information available to quickly and correctly service GM vehicles. By taking a moment […]

The GM Global Diagnostic System 2 (GDS 2) provides for quick and simple data acquisition when communicating and diagnosing vehicle on-board electrical systems. While using GDS 2, it records all […]

The GM Accessory Assist Steps available on 2014-2019 Silverado, Sierra; and 2015-2019 Tahoe, Suburban, Yukon, Colorado and Canyon models help make it easier to get in and out of the […]

The rear spoiler of the 2019 Corvette ZR1 (Fig. 18) is installed at the dealership during the Pre-Delivery Inspection (PDI). After installation of the rear spoiler, it may be noticeable […]

The 2019 XT4 may have a rattle sound heard near the front of the 2.0L 4-cylinder engine (RPO LSY) due to a stuck or collapsed timing chain tensioner and, as […]

DTC P0171 (Fuel Trim System Lean) may be set in the Engine Control Module (ECM) and the Check Engine MIL may be illuminated on some 2011-2016 Cruze; 2012-2015 Volt; 2012-2019 […]

Some 2016-2017 CT6 models may have an intermittent whine sound from under the vehicle. The sound may be more pronounced under acceleration. The sound may be caused by contact between […]

The updated GE-52200-A Powertrain Lift Table (Fig. 1) allows for easy removal and installation of powertrain and chassis components as well as fuel tanks, suspension components, and EV/PHEV high voltage […]

The Dealer Case Management (DCM) system (U.S.) enables dealership technicians to create, view and update GM Technical Assistance Center (TAC) cases in real time, reducing the time spent waiting on […]

The Check Engine MIL may be illuminated on some 2016-2018 ATS, CT6, CTS; 2017-2018 LaCrosse, XT5; and 2018 Enclave, Regal, and Traverse models equipped with the 3.0L V6 engine (RPO […]

Some 2018-2019 Equinox and Terrain models equipped with All-Wheel Drive (AWD) or driver-selectable Four-Wheel Drive (4WD) may have a click sound originating from the rear of the vehicle when traveling […]

Some 2014-2018 Silverado 1500, Sierra 1500; 2015-2019 Escalade, Tahoe, Suburban, Yukon; 2016-2019 CTS-V, Camaro, Corvette; and 2019 Silverado and Sierra models equipped with the 4.3L engine (RPO LV1, LV3), 5.3L […]

The Check Engine MIL may be illuminated along with DTCs P0171 (Fuel Trim System Lean Bank 1) and/or P0174 (Fuel Trim System Lean Bank 2) set in the Engine Control Module (ECM) […]

The infotainment screen may flicker occasionally on some 2019 Volt models. The screen flickering (Fig. 18) may be due to the component packaging inside the instrument panel, which may not […]

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 front seatback cover on some 2017-2019 Bolt EV models may become detached between the upper seatback cover and the side air bag. An updated seatback cover design has been […]

An update to the Tech2win software (Version 2.336) was released on April 22 in TIS2Web. The software includes a fix for the MDI/MDI 2 Device Explorer not coming up for […]

The GM Warranty Parts Center (WPC) requests the return of parts replaced at dealerships in order to better understand and help resolve product concerns. Returned parts are analyzed by Brand […]

The OnStar Remote Link mobile app was removed from the Google Play Store and the Apple App Store in late March 2019. It was previously announced that updates for the […]