When servicing the rear suspension on 2010-2016 Cadillac SRX and 2011-2012 Saab 9-4X models, the Service Information has been updated recently to require the replacement of both right and left […]

The 2021 Acadia, Terrain, Yukon; CT4, CT5, Escalade, XT4, XT5, XT6; Enclave; Tahoe and Suburban models no longer have a manual park release cable and pull handle under the front […]

Some 2020-2021 Encore GX and 2021 Trailblazer models equipped with the 1.2L engine (RPO LIH) may have a no start condition and DTCs P0335 (Crankshaft Position Sensor Circuit) and P0336 […]

A number of conditions regarding engine performance and air conditioning operation on some 2016-2021 Colorado and Canyon models equipped with the 2.8L diesel engine (RPO LWN) may be due to […]

The Afterblow feature is now enabled from the factory on 2021 Acadia (Fig. 12), Blazer, Bolt EV, XT5 and XT6 models. Previously, the Afterblow feature was disabled when the vehicle […]

Some 2020 Silverado, Sierra; 2020-2021 Camaro; 2021 Corvette, Tahoe, Suburban, Yukon, and Escalade models equipped with the 5.3L engine (RPOs L82, L84), 6.2L engine (RPOs L87, LT1, LT4, LT2), or […]

The trailer running lamps may illuminate momentarily and then turn off or may flash when connected to 2019 Silverado 1500 and Sierra 1500 models. When operating a trailer running lamp […]

DTC P2101 (Throttle Actuator Position Performance) may be set in history on some 2020-2021 CT5 models equipped with the 2.0L engine (RPO LSY). If DTC P2101 is set, complete all […]

Some 2020-2021 Encore GX and 2021 Trailblazer models equipped with the 1.3L engine (RPO L3T) may have a tapping sound coming from the engine that may sound similar to a […]

Some 2017-2018 Silverado, Sierra; 2017-2020 Tahoe, Suburban, Yukon, Escalade; 2019 Silverado LD, Silverado 2500/3500, Sierra Limited, Sierra 2500/3500; and 2019-2020 Silverado 4500HD/5500HD/6500HD models may have several communication concerns resulting in […]

Some 2020 Corvettes may have an illuminated Check Engine MIL and a reduced engine power message on the instrument cluster with no noticeable performance issues. DTCs P1967 (Serial Data Message […]

A new version of the GM Global Electronic Parts Catalog (EPC) will be released on October 17, 2020 with a number of enhanced features and functionality. (Fig. 1) The Q.link™-supported […]

The Rear Seat Media system available in the new 2021 Tahoe, Suburban, Yukon, and Escalade offers high-definition entertainment using two touchscreen displays and two infrared headsets. (Fig 8) Rear seat […]

Some 2020-2021 Silverado and Sierra models equipped with the 3.0L turbocharged Duramax diesel engine (RPO LM2) may exhibit a lack of performance along with DTCs P003A (Turbocharger Boost Control Position […]

A potential oil leak from the camshaft carrier gasket may be found on some 2019 CT6; 2019-2021 XT4; 2020-2021 Acadia, Blazer, CT4, CT5, XT5 and XT6 models equipped with the […]

The particulate matter sensor protection tube performance diagnostic may set a false DTC P1488 (Particulate Matter Sensor Temperature Circuit High Voltage) on some 2020 Silverado and Sierra trucks equipped with […]

Some 2020-2021 XT5 and XT6 models equipped with Night Vision (RPO UV3) may show a green, pixelated display in the Driver Information Center when Night Vision is selected. There are […]