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Old 06-29-2018, 11:32 AM   #13
MASTERBrian
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Join Date: Jan 2017
Location: Wichita
Posts: 639
Re: 99 K1500 Suburban no high speed ac fan

Much nicer. I really appreciate it.

It does appear the Orange is the high speed wire. If I'm correct, then shouldn't that wire put out voltage when on high? If no voltage I'd assume this past of control unit is bad, if voltage present I'd assume somewhere else.
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