Question about 1999 GMC Suburban

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1999 GMCsuburban wont turn over

I have full power until I turn the key more than half way, then there is a click click from under steering wheel area, and then no power what so ever. Turn key back and I have full power (lights, etc...) I can here the fuel pump start up at half a turn. The engine does at times attempt to start, but will not hold an idle or stay running.
Its like a kill switch has been activated.
Have been told its electrical, duh, but what can I replace a fuse? the brake switch?

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  • sc_mom4 Feb 10, 2009

    Have noticed the hetaer fan, internittently has gone off when car did run, and upon closing doors sometimes mysteriously doors would lock. oh help!

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Sounds like your starter is shorting..check your ground line and make sure no wires are crossing...you might want to also check the negative battery cable..if its not makeing a good connection to the battery or the block, youll get the same results and itll start burning out a wire..i have just recently fixed a problem similar to that on my truck.

Posted on Feb 10, 2009

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I would have to say its ignition switch, its under dash on steering colume.

Posted on Feb 10, 2009

  • ccn7 Feb 10, 2009

    I am still sticking with what i said, the ignition switch, it could be shorting out, that might be why everything is going wackey when you get to the start position. There is another thing that it could be but its kind of remote, and that is a ground strap has broke or came unhooked from body to engine, they have been known to make the electrical system go waco.

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