Remove center vent 04 trailblazer - Cars & Trucks

their is no round knob on center console --coin shelf-2 cup holders-shifter -cup holder- armrest --vents--rear audio control--12v acc--2 cup holders

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Trailblazer front differential removal

its on the back of the gas tank, near where the filler neck goes into tank, closer into the center of the vehicle.

Replace the regulator. The cables or gear for the motor is bad. You have to remove all the side panels going to the head liner, then remove the headliner. To unbolt the regulator. and replace it.

There's 9 screws in the plastic piece that surrounds the instrument cluster and the lower knee guard, remove those screws and pull the plastic trim away from the dash, disconnect the switches on the left side as you pull outward. Then there's 4 screws that hold the actual instrument cluster in place, remove those and pull the cluster out, unplug the grey plug in the back of the instrument cluster and your done. You may need to set your parking brake and put your transmission in 1st gear of you have a column shifter model.

For more information on Trailblazer instrument cluster problems visit this page - Trailblazer speedometer fix

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?

Sounds like you may have disconnected the cable that diverts the blower ducts up and down. Sorry but the radio may have to come out again to access it.

once a year you want to check the antifreeze/ freeon in your cooling system. from my understanding the cooling and heating system require this to function properly. they sell cans of this stuff at walmart that you can put in yourself.

dont think it´s easy, you must disassemble the whole control panel in order to take out the parts that hold the air vents.