The air transfer door module needs to be replaced. Special tool required and is available at the dealership. This tool reduces the laboour charge from a 4.5 hour job to a .6 hour job. There is a technical service bulliten published about the tool and the fix so get the dealer to look it up. Don't get ripped off. To do it yourself it is a complete dash removal so it is well worth it to pay a Chevy dealership.
If the air vents of the Chevy trailblazer 2004 are not blowing air, have the fuel pump checked.
The air of your Chevy trailblazer 2004 blow out of the front vents when the air conditioner is on because the air condition is faulty and it needs repair.
The mode door actuator has failed. We have instructions for repair at www.trailvoy.com
Check for a vacuum leak -sounds like it is starving for vacuum and reverts to the default position
if the fan motor isn't working, the fan motor has likely got a loose connection of some sort. if the fan does work but the reguler vents don't you might have something blocking them.
If your 03 Trailblazer blows heat out of the back vents when set on AC sometimes, it could be because of a faulty blower motor resistor block.
If the climate control on a 2003 Trailblazer will not switch from feet to head vents, try changing it to defroster then back to head. The mode button on the dual climate control model can only be switched from face/feet to feet and then to defrost. The feet and head vents worked at the same time.
Probably the mode door actuator. We have instructions on the replacement procedure on our enthusiasts forum at www.trailvoy.com
No power, no air! Simple
how do you fix chevy 20 ac to blow in correct vents
air want blow out vents
Could be the mode door actuator. For more info visit our enthusiasts forum at www.trailvoy.com