Incorrect Rear Camera Guidelines After Tailgate or Handle Replacement

Incorrect Rear Camera Guidelines After Tailgate or Handle Replacement

The rear camera guidelines may be incorrect or misaligned after the tailgate handle or the entire tailgate has been replaced (Fig. 13) on some 2020 Silverado 2500/3500 and Sierra 2500/3500 […]

May 29, 2020
Body Harness-to-Fuel Tank Damage

Body Harness-to-Fuel Tank Damage

Some 2017-2020 Camaro SS 1LE (RPO A1Y) and Camaro ZL1 models and 2018-2020 Camaro ZL1 1LE (RPO A1Z) models may have an extended engine crank or reduce power condition along […]

May 29, 2020
Diagnosing a Shudder Vibration Condition

Diagnosing a Shudder Vibration Condition

When diagnosing a shudder vibration condition on some 2016-2018 Silverado, Sierra; 2016-2020 Tahoe, Suburban, Yukon; 2019-2020 Silverado 1500 and Sierra 1500 models equipped with 5.3L V8 engine (RPO L82, L83, […]

May 29, 2020
Mass Air Flow Sensor Performance

Mass Air Flow Sensor Performance

Some 2019-2020 Escalade, Silverado 1500, Silverado 2500/3500, Tahoe, Suburban, Sierra 1500, Sierra 2500/3500, and Yukon models equipped with the 5.3L V8 engine (RPO L82, L83, L84), 6.2L V8 engine (RPO […]

May 29, 2020
Diagnosing DTCs P0016 and P0018

Diagnosing DTCs P0016 and P0018

DTCs P0016 (Crankshaft Position – Intake Camshaft Position Not Plausible Bank 1) and P0018 (Crankshaft Position – Intake Camshaft Position Not Plausible Bank 2) may be set and the Check […]

May 29, 2020
Fuel Injector Replacement Guidelines

Fuel Injector Replacement Guidelines

If an incorrect fuel injector is installed on 2014-2020 GM models equipped with a V6 or V8 gasoline engine (RPO LV1, LV3, L82, L83, L84, L8B, LT1, L86, L87, LT2, […]

May 29, 2020
Diesel Exhaust Fluid Consumption

Diesel Exhaust Fluid Consumption

The diesel engines (RPOs LWN, LM2, L5P, L5D) available on 2020 Colorado, Express, Silverado 1500, Silverado 2500HD/3500HD, Silverado 4500HD/5500HD/6500HD, Canyon, Savana, Sierra 1500, and Sierra 2500HD/3500HD models use Diesel Exhaust […]

May 21, 2020
Rushing Air Sound in PCV Tube

Rushing Air Sound in PCV Tube

Some 2020 Corvette models may have a rushing air or hissing sound coming from the engine compartment during normal engine operation. The hiss or vacuum leak sound is at the […]

May 21, 2020
DIC Messages Displayed After Auto Stop Event

DIC Messages Displayed After Auto Stop Event

Some 2018 Equinox and Terrain models may have several Driver Information Center (DIC) messages display on the instrument cluster after an Auto Stop (when the automatic engine stop/start system turns […]

May 21, 2020
Low-Frequency Vibration Under Wide Open Throttle

Low-Frequency Vibration Under Wide Open Throttle

Some 2020 CT5 models may have a low-frequency noise and vibration under wide open throttle that sounds like the muffler is grounding out against the body. The noise and vibration […]

May 21, 2020
GM Service Know-How Emerging Issues

GM Service Know-How Emerging Issues

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 […]

May 21, 2020
Thanks to All Our Certified Service Technicians

Thanks to All Our Certified Service Technicians

  General Motors is proud to support and recognize May 6th, 2020, as National Skilled Trades Day. National Skilled Trades Day aims to raise awareness about the benefit of skilled […]

May 6, 2020
Corvette Competition Sport Seat Bolster Pad Support

Corvette Competition Sport Seat Bolster Pad Support

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 […]

April 30, 2020
Valve Body Assemblies Function Tested Before Shipping

Valve Body Assemblies Function Tested Before Shipping

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 […]

April 30, 2020