Have a 2005 chevy tahoe. Jus recently put a new ac compressor dryer orfus tube belt replaced everything flushed lines put freon. For some reason the driver side vents will randomly blow out heat only way to stop it is to kill it and crank it again. Pulled fuses an waited while put em back made it worse now ot won't blow cold for 10 seconds an start blowin heat full blast. It's 1 owner vehicle I bought it he said he replaced the blend door actuator an it still dis it. How do I fix this???

SOURCE: How do you fix the driver side air blend door actuator?

you cannot repair the actuator you need to replace it with new one. These motors turn but get weak with time. if you test it, it works, put it in and it doesn't. this is because the motor is weak, unfortunately GM does not sell these motors separately.

SOURCE: ac blowing hot air

the blend door actuator located on the air box (right hand side under dash) is prob. inop. worst case senerio the blend door its self is broken. I have replaced the actuator more than anything.

SOURCE: 2005 tahoe no air blowing

as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash..

SOURCE: 2005 Chevy Impala driver's side heat blows cold.

First....buy a drivers side air flow actuator at a auto parts place for dual zone heating/cooling.
(NAPA etc will have it.....or the dealer)
Open the glove compartment.....all the way....you may have to take the screws out at the bottom......look in at the heater assembly....look over to the left....you will see the two air flow actuators.
Look at the part you have and match it to the part on the heater assembly.
The actuator that is closest to the engine is the drivers side control.
Replace it.
Try your controls and check for heat and cooling on both sides.
The stepper motor in these actuators goes bad on quite a few...but over look that.....you have a great car,good for many miles of trouble free driving.

SOURCE: 2005 jeep grand cherokee ac

THE ELECTRIC ACTUATOR MOTOR NOT WORKING. NOT ALLOWING AIR DOOR TO OPEN SO THE AC AIR CAN CIRCULATE THROUGH THE VENTS.