Hello guys I have 2003 Chevy blazer just wanted to post a solution for no fuel. I parked 2 days ago and the car died. I tried a few times and nothing. After a few diagnostics I towed it home and changed the fuel pump due to no fuel pressure. I just wanna save a lot of headaches for others.
1. Check fuel pressure fuel gauge
2. Check spark spark plug tool
3. Check the relay
4. Jack up car and unplug the fuel pump plug it’s a 4 pin. You’ll need a flash light and a long screw driver. Have a volt meter test the black-ground and the grey wire. You might need a paper clip or a hard wire to plug in it. Once you turn on the ignition it should read 12 volts or something. But don’t be fooled. You should also check the resistance from the black wire which is the ground it should be infinite. Get a long wire and use some clips and clip it to the grey wire and to the fuse box fuel pump relay. The lead to test is locate the 20 amp fuse and go down one leg then right to the next one. The reason why is because I got 12
volts on the grey wire but only 25% of the full resistance. You should get infinite. I ran a new wire under the chassis and it starts like a gem. The fuel pump didn’t need to be changed.
This ia my 3rd blazer and have had many problems that I had to figure out myself. Hopefully it helps others. Blazerbrain

 

Good advice. I'm saving this in my own personal list of hints on my computer.

 

yup I have had lots of things go wrong but on my 3rd had a 1993,1997,2003 all been very good for me most approached around 500000km