Archive for April, 2020

The all-new 2020 Corvette Stingray features three available seats: GT1, GT2, and Competition Sport. (Fig. 1) On some models with the Competition Sport seats, the sides of the aggressive seat […]

When replacing a valve body assembly (Fig. 7) on an 8-speed or 10-speed automatic transmission or solenoid body assembly on a 9-speed automatic transmission, technicians may notice the service part […]

Some 2020 Encore GX, Regal, XT4, XT5, XT6, Blazer, Equinox, Malibu, Acadia, and Terrain models equipped with the 9T45/50/60/65 9-speed automatic transmission (RPOs M3F, M3D, M3T, M3H, MJD, M3G, M3W, […]

A loose carbon patch in the air cleaner housing may be restricting air flow across the Mass Airflow (MAF) sensor on some 2020 Corvette models. (Fig. 11) DTCs P0101 (Mass […]

The EL-52545 TPMS and RF tool that was shipped as an essential tool to all GM dealerships in October 2019 can help with the diagnosis and repair of systems that […]

There may be several engine performance conditions found on some 2019-2020 Silverado 1500 and Sierra 1500 models equipped with the 4.3L V6 engine (RPO LV3), 5.3L V8 engine (RPOs L82, […]

A rattle or creak noise at slow speeds over bumps or broken pavement on some 2013-2016 Acadia; 2013-2017 Enclave, Traverse; and 2017 Acadia Limited models may be originating from the […]

The Field Service Engineer (FSE) Technician Recognition Awards (U.S.) is a new recognition program that celebrates the skill and dedication of dealership technicians who have recently worked with FSE’s on […]

On some 2019 CT6; 2019-2020 XT4, Silverado, Sierra; 2020 CT4, CT5, XT5, XT6, Blazer, and Acadia models equipped with the 2.0L engine (RPO LSY) or 2.7L engine (RPO L3B), the […]

Poor heater performance may be experienced on some 2020 Silverado and Sierra models equipped with the 3.0L diesel engine (RPO LM2). The poor performance may be caused by the heater […]

Some 2020-2021 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P) may have a thumping or knocking sound coming from the rear of the […]

A GDS2 error message stating “Request Rejected by the Control Module” may occur when trying to deactivate the brake boost system while performing the hydraulic brake system bleeding procedure on […]

A Low Oil or Add Oil message may be displayed on the Driver Information Center (DIC) on some 2019 Silverado 1500, Sierra 1500; 2020-2021 Silverado 1500, Silverado 2500/3500, Sierra 1500, […]

The 2020 Encore GX and 2021 Trailblazer feature the new 1.2L turbocharged engine (RPO LIH). (Fig. 20) The engine may have a noticeable sound under certain circumstances. Fig. 20   […]

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 […]