You have a vacuum leak in the fan control system somewhere... not easy to locate the leak
THE PROBLEM IS NOT THE BLOWER SWITCH.IT IS MORE THAN LIKLEY THE CABLE ON THE AIR BOX HAS CAME OFF.
You can switch it into attack mode, sure. But as long as it remains face-up on the field, it is affected by a condition applied by Silent Doom, saying that monster cannot attack.
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.
Could you be a more articulate in your question please.
Check for a vacuum leak either under the hood or under the dash Check the operation of the vacuum motors under dash Check the selector switch
myxedema
The mode door actuator has failed. We have instructions for repair at www.trailvoy.com
Nicolas Cage
It is the actuator for the ventillation system door that controls where the air goes, ie face, face/feet, defrost etc. When they go bad they click.
myxedema
Donatello faced the challenges of being a penis-face. You see. Penis-face was a rare condition back then. So there for. dicks.
The dash mounted ignition switch is spring loaded. The face is held on by two hooks and stubs.. It is removed by reaching up behind the dash and pressing the back of the switch towards the dash, then turn the face of the switch counter clockwise to release..