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1998 Chevrolet C2500 5.7L No Start
Posted to GM Driveability on 12/3/1998

this truck came on hook yesterday,I check fuel pressure was ok[60 psi]. hooked up scanner it was reeding rpm parameter I did check for spark disconecting spark plug wires [good spark]but I AM missing pulses from computer to injectors it will only pulses tw...

 
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car Vehicle Data

1998 Chevrolet C2500

VIN 1GBGC24R6W
Engine5.7 L / 8 cyl
EmissionsOBD-II Compliant
SymptomsNo Start
OccursAlways

Trouble Codes

P1631TCM Internal - Clock Processor Performance
Message Closed

car Vehicle Data

1998 Chevrolet C2500

VIN 1GBGC24R6W
Engine5.7 L / 8 cyl
EmissionsOBD-II Compliant
SymptomsNo Start
OccursAlways

Trouble Codes

P1631TCM Internal - Clock Processor Performance