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

Information On AFM DFM Usage – 2014-2020 Cadillac Chevrolet GMC

NHTSA ID Number: 10163690 Manufacturer Communication Number: PIP5663 Summary This Preliminary information communicates  AFM / DFM usage  Information. providing additional information on the AFM and DFM systems   50 Affected Products Vehicles MAKE MODEL YEAR CADILLAC CTS 2017, 2019 CADILLAC CTS-V 2016, 2018 CADILLAC ESCALADE 2015-2019 CHEVROLET CAMARO 2016-2019 CHEVROLET CORVETTE 2014-2019 CHEVROLET SILVERADO 2017 CHEVROLET SILVERADO 1500 2014, … Read more

Vibration During Active Fuel Management V4 Mode Operation 1200 – 1400 Engine RPM – 2014-2015 Chevrolet Silverado & GMC Sierra

2015 Chevrolet Silverado

NHTSA ID Number: 10115000 Manufacturer Communication Number: PIP5228B   Summary This Preliminary Information communication provides information to the technician about vehicles that have a vibration that is felt between 1200 ? 1400 engine revolutions per minute when in active fuel management V4 mode. Technician will need to use J?38792-A Electronic Vibration Analyzer 2 or CH?51450-NVH Pico Oscilloscope … Read more

Engine Oil Consumption Engine Oil Consumption on Aluminum Block/Iron Block Engines with Active Fuel Management (AFM) – 2007-2015 Cadillac Chevrolet GMC Pontiac

2015 Chevrolet Camaro

NHTSA ID Number: 10114272 Manufacturer Communication Number: 10-06-01-008M   Summary This technical bulletin provides a procedure to correct the customers concern to replace the left side valve cover and active fuel management oil deflector to reduce oil consumption.     Condition Engine oil consumption of vehicles with higher mileage (approximately 48,000 to 64,000 km (30,000 to 40,000 mi) and … Read more