Mechanics

HAS NO POWER TO FUEL PUMP RELAY

1987 GMC Sierra

Electrical problem
1987 GMC Sierra V8 Four Wheel Drive Automatic

any thoughts as to why my 1987 gmc has no power to the fuel pump relay
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Teresaj
April 7, 2010.



Check and test the ECM B fuse if okay test the orange wire from the relay to the fuse holder

Rasmataz
Apr 8, 2010.
Fuses check ok but there isnt any power in the orange from the relay to the fuse holder.

Tiny
Teresaj
Apr 8, 2010.
The wire is open-you suppose to have power at all times.

Rasmataz
Apr 8, 2010.
Ok my bad there was a bad fuse replaced it and now I have power on the orange wire to the relay. Now the switch that changes the tanks in the dash we think is bad. Bought a new one and you have to hold the switch down to make the fuel pump run - the old switch does the same thing.

Tiny
Teresaj
Apr 8, 2010.