Alright, here is the deal.I have a 1996 Blazer 4.3Last week, pulled into my driveway and truck shut off. Acted as if out of gas. When I turn on the key, the fuel pump does not prime. I checked the relays in the glove box, and all three of them are good. Is there any way to check to see if i am getting power to the fuel pump without dropping the tank? or do you think the fuel pump oil pressure switch could have anything to do with this? any info would be greatly appreciated!
Thanks, Mike

 

https://blazerforum.com/m_150497/tm.htm

read the last post...

last night under the advice of kyle. I "checked" the grounds.. and when I say checked I mean theres no way I'm going thru all of the cable right now so I ran 2 wires from a clean ground point to the two wires on the pcm.. so far so good.. it hesitated once this morning but nothing else all day in about 100 miles of driving...

 

my 95 has a red wire under the hood right side bye the back firewall that is just bye its self chillin that goes to my fuel pump if yours has one just hook a 12 volt source to it and u should hear it pop on