Do you have a test light? If not, go buy a cheap $5 test light-one with a lead to clip to a ground, and with a needle type probe.
Pull the fuel pump relay out of the terminals it is plugged into-you need to check if the power feed for the pump is still available at the relay. Clip the test light lead to a ground and touch the test probe to the positive battery post-to check that your ground is good- tester should light up. Now touch the probe to all of the terminals that the relay plugs into. One terminal should have power with key off. If no terminals have power, you have lost the power feed for the pump. Double check all your maxi fuses in the power distribution box. Either a maxi fuse or a fusible link will be the power feed for the fuel pump relay.
If the power feed is there at the relay, try a new relay. If still no pump, a shop will probably have to check your fuel pump circuit.
Did you check for power at the fuel tank while the key was held in crank? When the engine is cranking, the fuel pump wire should have power. When the key is turned to on, the fuel pump should have power for about 2 seconds, to pressurize the fuel system. Then when key is turned to crank or start, the fuel pump should stay on.
Thankyou I did what you said and one of the terminals does have power with key off and another terminal I checked has power when cranking so apparently everything up to the pump is good the problem must be in the wiring from the terminal to the pump inside the sending unit case in the tank, what do you think?
Yes, that's what it sounds like, if you have power to the gas tank connector. Did the relay click?
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SOURCE: we have 03 avalanche,no power to fuel pump,checked
there is a wire harness above the tank and are known to go bad they give you a new one when you buy a pump from napa maybe its corroded
SOURCE: location of fuel pump relay (1990 hyundai sonata)
The fuse box is located low on the left side of the dashboard behind a cover, or at the left side kick panel, behind a cover.
Relay Box
-is located under the left side of the dash as well. 
SOURCE: No power to fuel pump. main relay replaced and fuses checked under dash
hi tony, i had that same problem come through my shop! i eventualy (hours) found the burnt wire in its clear plastic connector in trunk, above backseat headrest. (top and back of trunk). i hope this helps, so you dont have to do what i did...LOL good luck, marty
SOURCE: 2000 jeep wrangler won't start, good crank, no bus
Check fuses first, but could be needs new CPU
Testimonial: "Thanks for your help, we checked the fuses even swapped out the relays. The CPU was a thought but someone else tried it and it didn't work. Might still try it though. Is there any other symptoms that would indicate the CPU is bad? We changed out the ignition switch, 135.00, changed the CPS, 42.00. I hear the CPU is about 150.00. When we run the tester it comes back with no error codes."
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