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"Engine Power Decreasing"
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01-08-2008, 06:04 PM
pdsq99f4
Hummer Veteran
Join Date: Nov 2006
Posts: 172
Re: "Engine Power Decreasing"
check the yellow wire at the TAC motor (throttle body). Sometimes it breaks inside the insulation and if you tug on it the wire will stretch. If that's not it, get it to someone with a techII to properly diagnose it.
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