Have a 2003 chevy 2500 that will not start. It was running fine and then i went to get into it and when i turn the key, i get power to everything and i can hear the fuel pump kick on but the engine will not turn over. Also it is a Army vehicle and somebody lost the keys to it so we had to beat the ingintion switch off so we could put a screw diver and start it that way. Does the chevy has a security thing at stops it from cranking?

SOURCE: vehicle just keeps cranking wont start.

Make sure that your fuel presure is up to at least 60 psi if not that could be your problem. If not, make sure you are getting spark, if not could be your Crank sensor or ingniton module ECM. Usually if your Engine control module wouldn't be bad because of your fuel pump is working, but may not be putting out the proper pressure for the fuel system. Fuel Pumps are a Problem with that year..

pat murray

• 293 Answers
• Posted on Sep 23, 2008

SOURCE: 1997 Chev Cavalier hard starting

it sounds like the check valve in the fuel pump is letting the fuel bleed back into the tank

SOURCE: 1997 chevy 2500 4x4 stumbles

Fuel pump is most likely the cause. Probably just barely making the required pressure to start. Needs to maintain 60-66 psi while cranking to start.

SOURCE: 90 chevy k1500 350 tbi fuel problem starts but wont stay running

Been there before!!!! usually it turns out to be something really dumb that makes you say "Why didn't I look at that first???" (either while you are smacking yourself in the head , or, just after!!!!)
Good luck again!!!

Testimonial: "Very helpful and knowledgeable! Website he reffered me too was just what i needed!"

SOURCE: 2000 Chevy Blazer Wont Start

2000 chevy blazer, fuel pump runs and turns off when presurized, truck turns over and want to start but will not run. Any suggestions?