I have a 1988 silverado 2500 4x4. My problem is it cranks but only runs for a few seconds then dies, as if it runs out of gas. It has the throttle body injection and is a 350 ingine. Any help or ideas where to start would be greatly appreciated.

 

check your fuel pressure it should be between 9-13 psi
get a fuel pressure testor take off your in line feul filter and connect the nuts at each end to the t
also it could be fuel pump
which sucks cause there like 200 bucks brand new