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2005 GMC Sierra 1500 SLE 5.3L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 7/7/2010 10 Replies

Thanx in advance for any help on this one. came in misfire checked plugs wires coils,cleaned mas air sensor it kind of felt like a vacuum leak sprayed none found thought intake may be leaking underneath replaced intake gaskets no help compression good pulled f...

10 Replies Received (View Replies)

  Related Documents & Media  2005 GMC Sierra 1500 SLE

 
Message Closed w/Summary

car Vehicle Data

2005 GMC Sierra 1500 SLE

VIN 2GTEC13T05
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways, Idle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

2005 GMC Sierra 1500 SLE

VIN 2GTEC13T05
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways, Idle

Trouble Codes

P0300Multiple Misfire Detected