Question about 2004 Chevrolet TrailBlazer
If the switch was on when you installed the new battery, or if you were jumped of by a vehicle with a stronger battery prior discovering you needed a new battery, then you probably created a power surge and fried the points in the switch. Try replacing the switch.
Posted on May 14, 2014
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Posted on Jan 02, 2017
There are what they call mode door's these days they have a electrical motor that turnes the door to different posistions...sounds like yours is become broken. It would depend on your expertise in the ac & heating system area to replace the part. Sometimes easy and most of the times the dash has to be removed.
Posted on Apr 02, 2009
Sounds like your selector switch is messed up to select where you want the flow of air to go. When you turn the switch to where you want the air to go does it work on floor and when you turn the switch to vent it doesn't?
Posted on Jul 28, 2009
Could it be a possibility that your switch is broken to that setting. Try popping off the knob with a screw driver, taking pair of pliers and twisting the knob. Feel for it switching settings.
Posted on Apr 17, 2010
SOURCE: After having to replace my
You need to perform a hard computer reset. which you basically did when you removed the batter, but this time, disconnect the battery and let it run down, move the a/c switches into the off position, then reconnect the battery after about 10 minutes. turn the key to the on position but do not start the engine. leave it like this for two minutes, you will hear the a/c cycling. after the two minutes are up, start the vehicle and let it run a while, (30 seconds) then turn on the a/c to the cold temp and low fan speed setting, it should cycle and come out the vents. if not you have the common fault code that will have to be reworked by gm. but most times this is the easy cheap and free fix.
Posted on Aug 08, 2010
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Dec 18, 2013 | 2007 Toyota Corolla
May 17, 2017 | 2003 GMC Envoy
It's most likely a vacuum line, look
under your hood (close to the cowl panel) for a disconnected, cracked
or broken vacuum line.
In some rear cases, it could be the
vacuum switch (in dash). Or vacuum diaphragm (under dash).
Hope this helps you ???
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