Cadillac CTS The mid-sized sedan that has grown the popularity of the Cadillac brand with it's low price and sleek styling

03 CTS - Engine Wiring Harness

Old 05-01-2012, 11:34 AM
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Join Date: May 2012
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Default 03 CTS - Engine Wiring Harness

I have the same issue as many others have with "Reduced Engine Power" issues on my 03 CTS. I ordered the Engine Wiring Harness that fixes the issue but I cannot find a guide anywhere to installing it. Does anyone have a link or a walkthrough on how to replace the Engine wiring harness?
Old 05-08-2012, 05:21 AM
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Anyone out there have any knowledge of this?
Old 05-17-2012, 08:30 PM
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Default same problem

I have the same problem with my 03' CTS. Where did ya get the harness from? I put a new throttle body on for the same errors as you, bbut that did not help. Keep me posted.
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