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tommie · 04-22-2010, 06:14 PM

on my 75' 1/2 ton big block,

blower motor was only working on HI

i replaced the blower resistor, then found out my ac relay on the ac box was bad. (relay working now)

the blower fan speeds work correctly in all ranges (bi-level, defrost, heater, vent etc)

when i have the selector in MAX AC, the blower motor only works on HI speed...

is this normal?

I thought the speed would have been adjustable...

Input please....

04-22-2010, 06:14 PM	#1
tommie 97' Tahoe 2dr/2wd Join Date: Jul 2002 Location: Huffman,TX Posts: 1,168	a/c questions on my 75' 1/2 ton big block, blower motor was only working on HI i replaced the blower resistor, then found out my ac relay on the ac box was bad. (relay working now) the blower fan speeds work correctly in all ranges (bi-level, defrost, heater, vent etc) when i have the selector in MAX AC, the blower motor only works on HI speed... is this normal? I thought the speed would have been adjustable... Input please.... Last edited by tommie; 04-22-2010 at 06:15 PM.