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1990 Chevrolet K1500 Cheyenne 5.7L PCM
Posted to GM HVAC on 6/10/2009 6 Replies

Hello Friends, Passing gear will set a spark timing code 43 with MIL and (lack of power, after the code sets),every time. The dtc chart has you rap on the engine block and watch the scanner, whick the scanner does indicate knock. The diagnostic aids has you ch...

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Message Closed w/Summary

car Vehicle Data

1990 Chevrolet K1500 Cheyenne

VIN 1GCDK14K4L
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
AffectedPCM
ConditionsPassing Gear
Message Closed w/Summary

car Vehicle Data

1990 Chevrolet K1500 Cheyenne

VIN 1GCDK14K4L
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
AffectedPCM
ConditionsPassing Gear