Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Check the underhood fuse block. It is mounted on the left fender. look for a blown fuse. It is best to use a test lamp to locate a blown fuse. If a fuse is blown you need to check the relay. Remove the fuel pump relay and replace the blown fuse. now check for power at the relay and ground. you will have a bat positive power there and a key on power there. next if the power is ok then check for ground. The ground signal only is there for 2 seconds and comes from the ECM/PCM. Use your test lamp with the clip connected to the + side of the battery and have some one cycle the key off and wait a bit then back on. one of the 2 remaining terminals will have a ground signal. The remaining terminal is the one that feeds the fuel pump. If you look at the relay you will see a small schematic with terminal numbers. terminal 30 is the B+ power supply and terminal 87 is the fuel pump terminal. if you jump them together you should be able to run the fuel pump and bypass all comtrol of the vehicle. You should wait before jumping it though. If you have an ohm meter you should be able to check the continuity of the fuel pump ckt. You should see between 2 to 6 ohms. If the continuity is too low then you have a shorted pump.
I hope this answers your question.