HVAC unit went out..will this 1 work?

[killergmctruck88]

http://i114.photobucket.com/albums/n252/killergmctruck88/hvac1.jpg

mine never had the MAX button..but i plugged it up in my truck and everything worked but am i hurting by using the max button?

[Mental Health]

http://i114.photobucket.com/albums/n252/killergmctruck88/hvac1.jpg

mine never had the MAX button..but i plugged it up in my truck and everything worked but am i hurting by using the max button?


You will be fine you just won't have a low speed anymore.

Edit: Let me say that you will have a low but not on the display.

Your new one will show this:
New Low=nothing
new med= old low
new high= old med
new max= old high

won't hurt a thing good luck!

[1990_Z71_BLACK]

i have this same hvac set-up in my newly bought truck and it just quit lighting up on me, if u know anything about this model and would know how to get it workin i would greatly appriciate it

[hornsfan10609]

Replace the three bulbs that screw into the circuit board, pretty much the only place to find them is at the dealership. Max is just the high speed button, BTW.

[94extcab]

I thought max is the recirc button, at least when i push max REC lights up.

[MStefak]

94extcab is right. Once you hit that button you cannot put it on Defrost OR anything but high.

[hornsfan10609]

That's right, but Chevy is basically using the recirculate button to mean it's the "max" speed setting. The older trucks, at least 90s had a REC button in place of the MAX.