1995 GMC JIMMY WONT START UNLESS I PRIME IT THEN IT JUST DIES ITS FUEL INJECTED

SOURCE: 2000 gmc jimmy wont start

I also had this problem with mine. There's a main power cable that runs to the battery. The bolt was completely corroded, so there was no connection = no power to start the truck. Check that, it'll cost ya less than 5 bucks to fix.

SOURCE: 1999 GMC Jimmy Startup problem

My friend had the same type of symptoms, there is a spider wed style od hoses under the intake that delivers fuel to all the cylinders that he found to have hairline cracks in it. Found out this is a know problem especially in the 4.3L Vortex

SOURCE: 1996 GMC JIMMY won't start

I think 54 p.s.i. on fuel pressure is close to border line, Are the injectors pulsating, You can have fire at the plugs but if injectors are not pulsating it will not run. I know there were problems with the injections systems on blazers and jimmys around that year, i would look closer to the injection system.

SOURCE: 1991 gmc jimmy over fueling at start up, it wont

Sounds like the relay is not shutting off fuel pump. Turn the key to on position ( not start ), pump should only run for a few secounds and you will hear a click and pump should shut off, if it keeps running relay is bad. If it works like it should than fuel regulator (if there is one) would be the next posability.

SOURCE: my 1999 gmc jimmy will not start unless i use starting fluid

u may want 2 check with a dealer gmc dealer but u may have 2 fuel filters on your jimmy poss. an in-line filter runs down the pass. side or driver side not all cars are the same