Diagnostic Tips

Particulate Matter Sensor Protection Tube Performance Diagnostic May Set A False DTC P1488 – 2020-2021 Chevrolet Silverado & GMC Sierra

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2020 Chevrolet Silverado

NHTSA ID Number: 10193477 Manufacturer Communication Number: PIP5748F   Summary This Preliminary information communicates to the technician instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.     8 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE ESV 2021 CHEVROLET SILVERADO 1500 2021 CHEVROLET SILVERADO 2500 … Read more

Service Engine Light Misfire Engine Noise With DTC P0300 P0106 P0506 – 2020-2021 Cadillac Chevrolet GMC

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2021 Chevrolet Camaro

NHTSA ID Number: 10193458 Manufacturer Communication Number: PIP5752L   Summary This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and  engine noise with possible of DTC P0300 P0106 P0506,  Possible valve spring concern     11 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE 2021 CHEVROLET CAMARO 2020-2021 CHEVROLET CORVETTE 2020 CHEVROLET … Read more

EV HPCM2 Programming – 2019 Chevrolet Bolt EV

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2019 Chevrolet Bolt EV

NHTSA ID Number: 10184136 Manufacturer Communication Number: PIC6422   Summary This Preliminary information communicates that If the K114B HPCM2 module is reprogrammed for any reason using normal Service Programming on a 2019 model year Bolt EV, the vehicle will be limited to 90% state of charge on the propulsion battery.  Vehicles not involved in the safety recall N20231173 … Read more

Battery Draw – Unable to Turn The Engine Off – 2016-2021 Chevrolet Camaro

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2021 Chevrolet Camaro

NHTSA ID Number: 10201283 Manufacturer Communication Number: PIC6397D   Summary This Preliminary Information communicates information to the technician about diagnosing a battery draw, or a concern where the engine may not be able to be turned off.     Condition Some customers may comment on a dead battery when they attempt to start the vehicle. Others may … Read more

Diagnostic Tip / Vehicle Sits Unlevel / Leans / Sags / Leveling Unavailable Message / Speed Limited Message / Service Air Suspension Message / DTC C1190 C1191 C1192 C1193 C1187 C1188 C1189 C118A C118B C118C C118E C118F – 2021 Cadillac Chevrolet GMC

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2021 Chevrolet Suburban

NHTSA ID Number: 10193457 Manufacturer Communication Number: PIT5801A   Summary This Preliminary information communicates an issue with how to properly inspect and ensure the air lines for the air suspension system are fully seated.     4 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE ESV 2021 CHEVROLET SUBURBAN 2021 CHEVROLET TAHOE 2021 GMC YUKON XL 2021 … Read more