Ive got a 93 Blazer with the 4.3. I can not here the pump turn on when I turn the key on. I have checked fueses relays and for power at the plug its there. can anyone tell me what could be wrong or what iam missing. thanks : )

 

Are you saying the truck does not run? I have a 99 and I can't hear the pump either. The truck runs great so I don't worry about it. A good way is to check is to check your fuel pressure and that will tell you if the pump is working correctly.

 

Absolutely...

Check for fuel pressure then for spark