HFV6 Engine Misfire On AFM Cylinders 2 or 5 – 2021 Cadillac Chevrolet GMC

NHTSA ID Number: 10202400 Manufacturer Communication Number: PIP5824 Summary This Preliminary information communicates a possible issue with the active fuel management rockers causing a misfire and the correction for this concern.   Condition A 2021 vehicle equipped with a HFV6 Gen2 engine with AFM may be brought into the dealership with misfires on cylinder 2 or 5. … Read more

Intermittent Extended Crank No Start – 2021 Cadillac Chevrolet GMC

NHTSA ID Number: 10202402 Manufacturer Communication Number: PIP5823 Summary This Preliminary information communicates to technicians the need to reprogram the ECM for an intermittent crank/no start concern.   Condition: Some customers may experience an intermittent extended crank or intermittent no start. The vehicle will crank for 15 seconds until it times out. The vehicle will start on … Read more

Intermittent Extended Crank or Intermittent Crank No Start and DTC P0341 Set – 2021 Cadillac Chevrolet GMC

NHTSA ID Number: 10202403 Manufacturer Communication Number: PIP5822 Summary This Preliminary information communicates to technicians to advise dealership technicians to inspect the camshaft exciter wheel and replace it if necessary.   Condition: Some customers may experience an intermittent extended crank or intermittent crank/no start. The technician may find DTC P0341 set with the MIL illuminated. The vehicle will crank … Read more

P0300 Setting After Bulletin 21-NA-154 Was Performed – 2021 Chevrolet Silverado & GMC Sierra

2021 Chevrolet Silverado

NHTSA ID Number: 10202406 Manufacturer Communication Number: PIP5816A Summary This Preliminary information communicates    A customer vehicle may have a concern of a P0300 setting after bulletin 21-NA-154 has been performed. Unknown Engineering is looking it to this concern   Condition A customer vehicle may have a concern of a P0300 setting after bulletin 21-NA-154 has been performed.   … Read more

Adaptive Cruise Inoperative with Adaptive Cruise Control Temporarily Unavailable Message and code U0422 – 2019-2021 Cadillac Chevrolet GMC

NHTSA ID Number: 10201294 Manufacturer Communication Number: PIT5845 Summary This Preliminary information communicates information to diagnose adaptive cruse with DTC U0422 in the EBCM.   Condition Customer may comment that the adaptive cruise is inoperative with adaptive cruise control temporarily unavailable message and DTC U0422 in the EBCM. The regular cruise may work when this happens.   Cause Concerns … Read more