Question about 2003 GMC Sierra

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Truck turns on but engine won't

I turn the key and all the electrical turns on. I could hear the fuel pump turn on but the engine won't start. Its been 2 days since it started....need help now plz

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  • copeskwsky9 Nov 16, 2008

    im having the same problem thing is i can start the truck with the starter just by getting the two nuts touching a screw driver, it just won't start when the key turns.

  • NILSON Jan 18, 2009

    I HAVE A 2002 GMC SIERRA THE MOTOR CRANKS OVER FIND BUT IT WILL NOT START.

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1 Answer

Check your starter

Posted on Oct 10, 2008

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It wont start after putting in new fuel pump was that the actual problem to begin with. how about a fuse can you hear the new pump when you turn key to on (not start) if not then check electrical connections fuse, relay, cam sensor, crank sensor. do that in order i listed it as the last part of that is probally not the problem also is there a fuel shut off valve in this car if so try resetting it.

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