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1988 GMC C1500 Sierra SLE 5.7L Poor Idle Quality, Hesitation
Posted to GM Driveability on 9/24/2008 29 Replies

I have a 88 gmc 1500 that idle surges only when it is cold and has vacuum fluxuation between 15-20in only dureing surge and about a solid 20 when warm and running normal, als has slight power loss, But runs smooth when warmed up and runs ok, I have checked fue...

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car Vehicle Data

1988 GMC C1500 Sierra SLE

VIN 2GTDC14K8J
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsFederal
SymptomsPoor Idle Quality, Hesitation
OccursCold
Message Closed

car Vehicle Data

1988 GMC C1500 Sierra SLE

VIN 2GTDC14K8J
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsFederal
SymptomsPoor Idle Quality, Hesitation
OccursCold