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1999 GMC Yukon SLT 5.7L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 5/9/2013 31 Replies

Vehicle came in shop with p0302, rough idle. Scoped #2 it seemed to have a short burn time. Installed new plug,new wire and cap same issue. Did a injector power balance with tech 2 all injectors same result. Did a relative compression test showed #2 low,checke...

Summary posted 5/14/2013

31 Replies Received (View Replies)

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car Vehicle Data

1999 GMC Yukon SLT

Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / MULTI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways, Idle

Trouble Codes

P0302Cylinder 2 Misfire Detected