Question about 2003 Hummer H2

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Key shifter lock

My electrical was completely out. No door locks, windows, radio, or gauges. Both key and shifter were locked up. I replaced the wiring harness attached to the shifter on the side of the shifter console. This fixed all my electrical issues but my key will not release nor will it shift in to gear. I have to manually push release button for the key as well as the actuator to engage the shifter. I took it for a test ride and also noticed it felt as though the e-brake was engaged yet it wasn't. Is there a "clear code" I need to use? By replacing the whole shifter assembly will that cure my problems? Thanks

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  • 52 Answers

Yes, the shifter assemly has to be replaced. they are pricey but it does fix the problem. Also is very common in the newer Dodge magnums.

Posted on Jan 01, 2014

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SOURCE: radio is locked-need to unlock, plus unlock code

1 have h3 hummer and replaced the radio (ac delco) and is locked,i need to unlock it

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SOURCE: After battery died , recharged battery , now

has to be re-programmed by dealer next time send power into cigerete lighter with nine volt battery before changing battery and all memory will be saved auto parts sell this tool for 5 dollars. one end is for nine volt battery the other a power port jack.

Posted on Jan 13, 2010

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SOURCE: my 2006 h3 has been

Replace the PCM fuse located under the hood in the fuse box. Sounds crazy but mine wasn't blown, took it to the dealer and they replaced my "good" fuse with a new one and everything worked again.

Posted on Dec 08, 2010

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  3. Disconnect the steering column electrical connectors.
  4. Remove the wire harness assembly from the steering column and the wire harness strap.
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