Question about 2003 Chevrolet TrailBlazer

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03 trailblazer won't stay started we bypassed the starter it starts for a second on the first try after that it won't turn over. We have a new battery and everything comes on but the radio. Any ideas?

Posted by Anonymous on

  • Anonymous Mar 17, 2011

    Relay didn't work either. It still does the same thing.

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  • 638 Answers

Check out the fuse / relay box located under your hood on the drivers side, these should have a instruction pattern on the inside of the fuse / relay cover, check the starter relay , hope that this has been very helpful to you.

Posted on Mar 17, 2011

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Sep 06, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

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I would start with the bypass and work your way through the starter. Start by undoing all your trim panels around your steering column and dash bezels and drivers side kick panel. Then go from there. hope this gives you some direction.

Sincerely,

JC

Dec 02, 2008 | 2003 Chevrolet Trailblazer Ext

1 Answer

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it is a communication error with the ecm from the ignition switch here is the code description

GM Number U1000

Type Network - Manufacturer Controlled DTC - Manufacturer Controlled

Description Class 2 Communication Malfunction Conditions
Cause
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