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Electrical Gremlin

This is a discussion on Electrical Gremlin within the General Help forums, part of the LSx Technical Help Section category; Have a 2002 chevrolet silverado 1500 acting up. Yesterday I started it up to leave, put it in gear (Started ...

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    Member c5z28's Avatar
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    Electrical Gremlin

    Have a 2002 chevrolet silverado 1500 acting up. Yesterday I started it up to leave, put it in gear (Started backing up) then it died. The battery light came on for just an instant when it happened. This morning it cranked over but didn't start. Last time this happened I tried swapping relay's and checked fuses and all seemed to work. Didn't change anything and for giggles I cranked it again and it worked. No issues for a couple days and it has relapsed.

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    Smiles for 9.5 Years cammed goat's Avatar
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    Have you checked the battery for leaks and terminal tightness? How many miles on the truck? How worn out is the key? Could be the ignition lock cylinder. Do you have to turn the key hard when you try to start the truck?

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    Moderator Cutlass's Avatar
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    sounds like it could be a fuel pump problem.

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    Member c5z28's Avatar
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    Checked the battery, just have to turn the key like I normally do. It cranks just doesn't start. It has roughly 75k on it, and I changed the fuel pump just a couple thousand miles ago. I'll check for fuel pressure at the rails but how do I test the ignition lock cylinder?

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    Veteran 0rion's Avatar
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    what motor does it have? Even though you swapped pumps I would still go ahead and check pressure at the rail.

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    Moderator Cutlass's Avatar
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    Quote Originally Posted by c5z28 View Post
    how do I test the ignition lock cylinder?
    If that were bad, you'd have a security light on. Or security trouble codes stored in the BCM. Its a little different then the F-body VATs system. When there is a problem with your truck's security system, it disables the fuel injectors. It'll still crank ok and the fuel pump will run ok.

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    Member c5z28's Avatar
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    It's a 5.3, I'll check for the security light today.

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