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Old 01-25-2018, 05:54 PM   #2
Mr_Rich
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Join Date: May 2006
Location: Santa Maria, Calif.
Posts: 781
Re: Heater fan only works on high

This was copied from my schematic diagram book.
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1989 K1500 Chev. EC
Original owner; some of the aftermarket parts I've installed are Borla headers, Hypertech chip, Edelbrock water pump, and a Stillen rear disc brake conversion kit.
2009 Hummer H3T 3.7L 5M (sold)
1997 K2500 Chev. EC 7.4L/ 4L80E
2018 Dodge Ram 2500 HD R/C
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