1996 gmc topkick with 3116 fuel system problems

Old 07-07-2010, 08:49 PM
  #1  
kwkracing
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Join Date: Dec 2004
Location: austin texas
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Default 1996 gmc topkick with 3116 fuel system problems

I have a 96 topkick with a 3116, walked out and it decided not to start. It has diesel, but the fuel pump and fuel shut off do not seem to get any power. I checked the fuses and relays under the steering wheel and under the hood above the engine and could not find any that were bad. I also checked to make sure the pump is getting fuel and it is when i hook a inline pump up. Should i be able to put 12 volts to the solenoid on the heui and it open. I believe there is a electrical problem keeping the pump and kill valve shut off. Any idea where the fuse and relay for these two items are located on the truck?

Thanks
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