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1991 GMC K2500 Sierra SLE 5.7L Poor Idle Quality, Surge, Stall
Posted to GM Driveability on 6/15/2006 8 Replies

Truck will start and run fine until after it is warm. Then when you let it idle in park the rpm's slowly drop to about 500. I can watch the iac drop with it to about 10 counts. Then the idle will surge up a little and then die. It seems as if the computer is c...

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  Related Documents & Media  1991 GMC K2500 Sierra SLE

 
Message Closed w/FIX

car Vehicle Data

1991 GMC K2500 Sierra SLE

VIN 1GTFK24K3M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsOBD1 Fed
SymptomsPoor Idle Quality, Surge, Stall
OccursHot, Idle
Message Closed w/FIX

car Vehicle Data

1991 GMC K2500 Sierra SLE

VIN 1GTFK24K3M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsOBD1 Fed
SymptomsPoor Idle Quality, Surge, Stall
OccursHot, Idle