Lost power to ac/heat control.

SOURCE: fan quit on 87 celebrity, heat ac, etc.. fuse ok ????

Hi
Check for bad connection at heater resistor or try tapping heater motor lightly
with ignition switch on and heater switch on. Could be heater switch connection.

SOURCE: 2005 colorado pulled fuse for power locks, to stop

This is a common problem, there is either a pinched wire in the harness that is in the door jam or your fuse block is shot, there is a gm service bulletin out on this, I would call your local dealership to find out if it is covered.

SOURCE: door locks and power window

Just did this procedure I got from coloradofans.com forums:

"any type of power/voltage change seems to trigger this issue

The most common symptom is power locks fail and only the driver window quits, however that is on the extended cab.

Steps to fix and it works every time.

take door panel off driver's door
Disconnect the wiring attached to window and power lock control unit
disconnect battery cables
connect the negative to the positive cable(((NO BATTERY CONNECTED)))
This will act to short residual voltage in the system

5 minutes later
place the key in the ignition and turn to the run position
connect the wiring to the window/lock controller
connect the negative cable to the battery
then the positive
open drivers side door
turn key to the off position((do not remove yet)) you should get a series of dings through speakers telling you the key is still in the ignition
once it begins dinging pull the key out and you should hear the door lock solenoids trigger and the windows should work." - Coloradofans.com forums

SOURCE: NO power to the A.C. compressor

Check the AC pressure switch that will turn on the circuit which is on the liquid line going to the evaporator core

SOURCE: Heater

heater wont blow out hot air but cold air works fine on 2005 malibu