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1995 GMC G2500 Vandura 5.7L Surge, Stall, MIL Lamp on, CODE 54
Posted to GM Driveability on 1/21/1999

Dear Friends,

I fail to understand how the PCM can sense voltage on the f/p circuit if the circuit is wired as it shows on the diagram- the redundant power through the o/p switch would keep 12 volts there all the time. The diagram must be somewhat simplified...

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car Vehicle Data

1995 GMC G2500 Vandura

VIN 1GDEG25K8S
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsNot OBD-II Compliant
SymptomsSurge, Stall, MIL Lamp on, Code 54
OccursHot, Idle, Intermittently, Stopped/Stopping
Misc.Custom Van

Trouble Codes

54low voltage fuel pump circuit
Message Closed w/FIX

car Vehicle Data

1995 GMC G2500 Vandura

VIN 1GDEG25K8S
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsNot OBD-II Compliant
SymptomsSurge, Stall, MIL Lamp on, Code 54
OccursHot, Idle, Intermittently, Stopped/Stopping
Misc.Custom Van

Trouble Codes

54low voltage fuel pump circuit