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1995 Chevrolet C3500 6.5L MIL Lamp on
Posted to GM Driveability on 6/9/2008 6 Replies

I checked pc1 and pd1 ground and they are good. Are these the only grounds to this computer? The computer will not duty cycle the wastegate. the map is read 4.2v idle. Am i missing a ground to check? these are the only grounds my computer shows.

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car Vehicle Data

1995 Chevrolet C3500

VIN 1GTHC39F1S
Engine6.5 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFI / turbo diesel
EmissionsNot OBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

46mil circuit
78wastegate soleniod
812-3 shift solenoid circuit
821-2 shift solenoid circuit
83tcc pwm solenoid circuit
Message Closed

car Vehicle Data

1995 Chevrolet C3500

VIN 1GTHC39F1S
Engine6.5 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFI / turbo diesel
EmissionsNot OBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

46mil circuit
78wastegate soleniod
812-3 shift solenoid circuit
821-2 shift solenoid circuit
83tcc pwm solenoid circuit