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Only 3 of 4 blower fan speeds?

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07-02-2015, 11:38 PM	#1
Gordonr1973 Home Built '87 Join Date: May 2010 Location: Calgary, Alberta Canada Posts: 1,829	Only 3 of 4 blower fan speeds? Hi guys; I'm trying to find a gremlin in my heater/blower fan system...the 2 lowest fan speed settings blow the same in my truck. When I switch to the 3rd and 4th, there is a definite difference. I changed the fan motor, the relay and double-checked my wiring vs the wiring diagrams listed here on the site, everything looks fine. The only thing I didn't pull out to inspect was the control switches in the dash...any suggestions?? Attached Images __________________ Gordon 1998 White Chev ext cab 2WD (Summer Project) http://67-72chevytrucks.com/vboard/s...d.php?t=408424 1987 Chev Silverado SWB (Winter Project Rebuild) http://67-72chevytrucks.com/vboard/s...d.php?t=424833 Truck Club http://67-72chevytrucks.com/vboard/s...d.php?t=466969

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