Why does 2001 gmc jimmy won't start unless primed why won't 2001 jimmy start

Poor design of spark plug distributior, moisture builds up and doesn't fire properly. Drill small holes in bottom of plastic holder. And seal with heat resistant sealant. And Change the plugs going from EGR valve. They Wear out. Use fuel cleaner Heet when putting gassing up moisture builds up in tank. I have 2000 jimmy, it eventually solved the problem. Change gas too. Basic maintenance too. ET NY.

security issues,

Bad fuel pressure regulator under the intake manifold
& possibly a fuel pump loosing pressure also

It is not receiving fuel you need to check your fuel pump.

I will suggest if you ever drive it to California, unless you comply with their rules it won't be legal. However if you're a legal resident in another state, abide by their rules u should be ok. Again this is not legal advice, it's a suggestion.

your fuel system needs to be primed

Remove intake manifold and change pressure regulator/spyder assy

try turning the key on for a few seconds, then turn it off and turn it back on and start the vehicle. RT

check the fuesable link!!

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