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Old 09-27-2015, 04:30 PM   #1
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It'* a 2007 gmc Sierra 5.3L 4x4. While driving traction control light comes on and shifts hard. The temp of the vehicle doesn't make a difference. Weather it'* cold or up to operating temp. Any idea?????? I've heard it is a common problem. But no confirmed fixes yet.

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Old 09-27-2015, 08:29 PM   #2
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Check out my response in this thread: caddy failures /problems?? .it is a response to a question asked in regards to Cadillac Escalade.......the systems in your Denali are the same.....you may find something of interest.

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