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1998 GMC K1500 Sierra SLE 5.7L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on, sometimes har start
Posted to GM Driveability on 4/16/2013 30 Replies

Hey everyone, thanks for the help ahead of time, this is my dads truck and its kicking our as*es! This problem is very intermittent, but happens 2 or so times a week. I will try and explain as best as i can. Vehicle initially came in with P0305, i found origin...

30 Replies Received (View Replies)

  Related Documents & Media  1998 GMC K1500 Sierra SLE

 
Message Closed w/Summary

car Vehicle Data

1998 GMC K1500 Sierra SLE

VIN 3GKFK16R7W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / spyder poppets
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on, Sometimes Har Start
OccursIntermittently

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected
Message Closed w/Summary

car Vehicle Data

1998 GMC K1500 Sierra SLE

VIN 3GKFK16R7W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / spyder poppets
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on, Sometimes Har Start
OccursIntermittently

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected