Blower Motor Question

[Grim Reaper]

Originally Posted by plumbcut

dont listen to these guys. Max AC = full speed fan, no matter what the speed switch is set to.

pc

My 75, my 79, and my 88 do not do that. Still have full control over speed. MAX A/C is the same as regular A/C except it is in recirculate mode. Withthe cappy 134 it's always set on max except when my wife over comes my nasty start and smokes in the truck. Then I roll down her window and put it on regular A/C so it draws from the outside and doesn't circulate the smoke into the blower box.

[76sierraclassic]

Originally Posted by Grim Reaper

My 75, my 79, and my 88 do not do that. Still have full control over speed. MAX A/C is the same as regular A/C except it is in recirculate mode. Withthe cappy 134 it's always set on max except when my wife over comes my nasty start and smokes in the truck. Then I roll down her window and put it on regular A/C so it draws from the outside and doesn't circulate the smoke into the blower box.

OK...so now I'm confused. There are several folks saying that mine is functioning right, and others saying that their's function differently. How do we find out who's right? Was it some funky option, or do a bunch of us just have the same problem with our A/C blower or switch? If it's a problem that all of us have, then can anyone tell us what to do to fix it?

Mike

[Grim Reaper]

I didn't drive any of my trucks but I know on my 88 Burb with Dual air it does not work like that. It sounds like it's in Jet engine mode when the flap closes but still can control the fan speed.
HIGH is controled by that relay under the hood on the blower box. Actually it's all controlled there but the High setting is on a different circuit then the rest.
Wishe these were like my Toy with a A/C button and seperate inside out side control. I really hate that GM control. I can't make it work the way I want. I want Def blowing without A/C in the winter.