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2015 GMC Terrain SLE 2.4L Excessive Emissions, Poor Idle Quality, Surge, Misfire, MIL Lamp on
Posted to GM Driveability on 10/24/2023 7 Replies

We have a recurring code p0191 on this car, happens when after a drive, come to a stop and idle , and engine starts running rough, fuel trims peg +25, rich exhaust smell, high pressure drops to 200-350 psi,desired pressure is 0,low pressure stays normal. c...

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  Related Documents & Media  2015 GMC Terrain SLE

 
Message Closed w/FIX

car Vehicle Data

2015 GMC Terrain SLE

VIN 2GKFLVEK5F
Engine2.4 L / 4 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Surge, Misfire, MIL Lamp On
OccursIdle
Message Closed w/FIX

car Vehicle Data

2015 GMC Terrain SLE

VIN 2GKFLVEK5F
Engine2.4 L / 4 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Surge, Misfire, MIL Lamp On
OccursIdle