Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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To verify the cause a few test will need to be done. Do you have a Test Light, if not could you get one. Most auto parts stores have them and cost is about $5-$20
Once you are able to do the testing this is what I want you to test.
With the ignition on use the test light and test for power at this fuses. The fuses are located in the fuse block under the hood.
ENG I, ECM B, ECM I
Did you have power at all of this fuse with the Ignition switch in the on position?
Now remove the fuel pump relay In the picture below will show you what each slot is.
Connect the relay to battery positive and test the ground slot. Did the test light light up?
Connect the test light to ground and test the Main Power slot, Did the test light light up?
Connect the test light to ground and insert it into PCM Signal slot. Now turn the key on Does the test light light up for a few seconds then go off?
Once I have the answer to these test then we can contenue on.
When testing the fuel electrical system a voltmeter is not that useful. I just helped another person with the same problem. He used a voltmeter and the readings were never correct. After two days I told him to get a Test light. Once he got a test light we had the problem found on 30 minutes.
If the fuel pump relay socket got hot and melted then most likely you just found your problem. I have seen the fuse blocks melt before and it will require you to replace it or some can be opened up and the contacts replaced.