Pop Noise Heard on Heavy Acceleration Only, Lack of Power When on the Highway, Stall- Multiple DTC’s or No DTC’s Set – 2021-2022 Buick Encore GX & Chevrolet Trailblazer

2022 Chevrolet Trailblazer

NHTSA ID Number: 10205559 Manufacturer Communication Number: 21NA215   Summary This technical bulletin provides a procedure to correct a customer concern of a Pop Noise Heard on Heavy Acceleration Only.     4 Affected Products Vehicles MAKE MODEL YEAR BUICK ENCORE GX 2021-2022 CHEVROLET TRAILBLAZER 2021-2022   Condition Some customers may comment that a pop noise can … Read more

Engine Wire Harness Chafing / IPC Gauges Sweep / IPC Warning Message / SES/Check Engine/MIL / No Start / No Crank / Runs Rough / Stalls / Reduced Engine Power / Various DTCs – 2019-2021 Cadillac Chevrolet GMC

2020 Chevrolet Silverado 1500

NHTSA ID Number: 10224856 Manufacturer Communication Number: 21-NA-149 Summary This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.   Condition 1 This Condition pertains to vehicles equipped with engine 2.7L, L3B only. Some customers may comment on any of the following concerns: – SES MIL – No Start – No … Read more

LIN Bus Diagnostic Information – 2014-2023 Buick Cadillac Chevrolet GMC

Chevrolet Buick GMC Cadillac

NHTSA ID Number: 10224304 Manufacturer Communication Number: PIT5698C Summary This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.   Condition As more smart motors, switches, and sensors are being used there are more Local Interconnect Network (LIN) buses on vehicles. Because of this, some questions … Read more