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1989 Chev/GMC Truck 1ton cubevan 5.7L 12-23
Posted to GM Transmission on 11/25/1999

we have tried changing the governor and modulator but to no avail it will up shift when the gas is let off slightly any ideas also it seems gutlass when the engine warms up but when cold it seems to have lots of power restricted exhaust ? im at a loss here...

 
Message Closed w/FIX

car Vehicle Data

1989 Chev/GMC Truck 1ton cubevan

VIN [No VIN Available]
Engine5.7 L / 8 cyl
Affected12-23
Message Closed w/FIX

car Vehicle Data

1989 Chev/GMC Truck 1ton cubevan

VIN [No VIN Available]
Engine5.7 L / 8 cyl
Affected12-23