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2008 Chevrolet Suburban 1500 LTZ 5.3L Misfire, Misfire
Posted to GM Driveability on 4/6/2022 8 Replies

Customer returned with Check engine light on for po300 history missfire on #6 and #8. Test drove did not get a misfire fuel trims at idle are around (-6% sometimes would hit -11%) Cruise fuel trims are around 0-3%. when you clear the P0300 drive at 50mph a...

8 Replies Received (View Replies)

  Related Documents & Media  2008 Chevrolet Suburban 1500 LTZ

 
Message Closed w/FIX

car Vehicle Data

2008 Chevrolet Suburban 1500 LTZ

VIN 1GNFK16368
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, Misfire
OccursCruise

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2008 Chevrolet Suburban 1500 LTZ

VIN 1GNFK16368
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, Misfire
OccursCruise

Trouble Codes

P0300Multiple Misfire Detected