power for the fuel pump goes through the oil pressure sender so if you loose oil pressure it turns the engine off. Look at the oil pressure sender and the wire for it.
The fuse or relay for power windows on a 2002 Chevy Blazer is located under the dash near the emergency brake. It can be readily replaced by pulling it out.
Power seat relay location for 1996 Blazer
Check the ignition switch. Mine has a worn ignition switch so there were no power going to the pump. Good luck!
If you have power to the plug, and the relay is is replaced, did you check the GROUND?
There are two causes for this. The first thing would be the fuse could be blown, if this isn't the case then the relay switch will need replaced.
In the fuse panel
is it a 4x4?? yes
It should be in the power distribution box under the hood.
The relay is on the left side of the power brake booster/.
under the hood on drivers side in a big black relay box
The 2001 Chevy S 10 Blazer power door lock relay switch is located inside of the drivers side door. You will need to remove the drivers side door panel in order to access the door lock relay switch.
If memory serves me right, fuel pump relay, daytime running lights relay, horn relay and if there is a fourth one, power door lock relay.