Question about 1996 Chevrolet C3500
I checked all fuses. This truck has 2 fuel tanks, I have already changed the inline fuel pump and the filter. Neither fuel pumps are working. Problem was intermittent at first. Last time truck was running it would stall when trying to accelarate. It would only keep running at near idle.There is battary power to fuel relay but no keyed power.
Check in relay box on passenger side near firewall for fuel pump relay.
By -pass, no such luck that I' aware of, sorry.
Posted on Apr 26, 2009
If the oil pressure switch has two wires on it it may be one that shuts down the pump. I'm not positive but I think it completes a ground circuit, not the hot side though (but may run through a relay.) There should be a pump relay under the hood with a group of other relays. I don't have a wiring diagram for your car but you can get a basic diagram in most inexpensive manuals. They wont usually give you locations but at least you can get an idea of how the system works. There usually is a fuse. If the fuse block is not labeled, use a test light and probe the back of every fuse for power with the key on (takes about ten minutes and faster than trying to find info) change any that are blown. The most likely culprit is a relay, so after testing fuses look for it. (usually on drivers fender or on right side near firewall.) Worst case, trace the power lead all the way through the harness 'till you find where power begins.Testing is important here...I could give you much better info if I was there to do it for you. Most important is to stay "on track" till you find the place where power ends. Don't jump all over the place or you will end up doing an incomplete test.
Posted on Jun 17, 2009
SOURCE: 1996 chevy tahoe fuel system
i am having the same problem with my 96 pickup i am getting low voltage to my fuel pump i have traced the wires back to the front the purpel wire is the one with low voltage i replaced fuel pump also fuel relay and still have low voltage
Posted on Jun 22, 2009
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