Thread: Heater tempurature control 2004

I have a 2004 GT with manual A/C recently noticed thet no matter where i put the tempurature control it is always blowing full hot.I suspect there is a problem with the Tempurature blend door but am wondering if anyone had experience with this, like how to get at it, how it operates eg. vacuum or electrical, or if you may have an idea of a common problem with this. Thanks for any help you can give me..PS the blend for defrost, vent, floor is working fine as is the blower, its only the temprature...

It's all electrical so it's relatively easy to diagnose.

Try removing the hvac fuse from the passenger side of the dash for about 2 minutes, then put it back in and start the car, Leave it run for at least 2 minutes and do not touch any controls while your waiting. This will recalibrate the position of all the flap motors and climate control.

If it is still doing the same thing i would guess the temperature control motor is bad and you can get one from almost any gm car made since 2004 to replace it and repeat the above calibration procedure.

Let us know how it goes