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2015 Chevrolet Silverado 1500 LT 4.3L Excessive Emissions, Misfire, MIL Lamp on
Posted to GM Driveability on 12/22/2025 9 Replies

Engine has random misfire very rich running a lot of smoke out the tailpipe. Scan the high pressure desired fuel pressure at idle was about 750 PSI and the scanner says actual pressure is around 350 sometimes 400 or even below 300. It seems to be a possibl...

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car Vehicle Data

2015 Chevrolet Silverado 1500 LT

VIN 1GCRCPEH5F
Engine4.3 L / 6 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P228CFuel Pressure Regulator1Exceeds Control Limits
Open Help Request

car Vehicle Data

2015 Chevrolet Silverado 1500 LT

VIN 1GCRCPEH5F
Engine4.3 L / 6 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P228CFuel Pressure Regulator1Exceeds Control Limits