Why does my Chevy Trailblazer not blow air?

Its just a stepper motor… When it fails and you disconnect the battery it probally just looses its position and has no idea where it is, rather then have no defrost, which is a saftey issue, it just defaults to floor and defrost. Mine was working fine until I pulled the a/c control unit out…

What to do if your Chevy Trailblazer heater stops working?

If the heater has stopped working in your Trailblazer, this process has failed in one way or another. A word of caution: If there is no coolant in your overflow, you can refill it by adding more to the overflow reservoir. There is almost never a situation where you would need to take the radiator cap off of the radiator to add coolant.

Where is the air vent on a Chevy Trailblazer?

Its near the steering column and if you have adjustable pedals its a bear to change. It commonly fails (or shows up) after unhooking the battery. I know several that failed including mine after having the battery unhooked.

How much does a trailblazer gear wheel cost?

You can either replace the gear wheel $18 or spend $40 an up on th actuator that really does work but the gear is broken. You can’t post conmments that contain an email address. An expert who has achieved level 1. An expert that has 1 follower. Re: TRAILBLAZER BLOWING OUT COLD AIR FROM ONE SIDE AND…

Where is the ventilation controller on a trailblazer?

The rear controller has two servos, one that selects either heating or air, and one that controls whether the side or top vents are selected. The servos are located with a blower motor behind the passenger rear tire. The controller is under the 2nd row passenger seat along with the fuses.

Can you turn on the air conditioner in a Chevy Trailblazer?

If it’s been in the garage, even if the air temperature is 110+, it will turn on right away as long as the condensor is not heated up from a hot engine. There’s no way to change it I’m aware of.

Where is the temperture on a Chevrolet TrailBlazer?

It does this no matter where the temperture is set on the drivers side. I heard about another one that was doing this and all they did was turn off the car and then restart it and it started working again.

Why does air not blow out the dash vents?

The air won’t blow out the dash vents. It blows out the floor vent and the defroster vent, but it won’t change and blow out the dash vent. Any one know what I need to do to fix this problem?

Why is the pass vent on my heater not working?

There is a blend door in your heater and it’s either stuck or not working. It ‘s electrical or vacuum. You can reach your hand under the dash and see if you can move it one way or the other. You should be able to see if it will start to put the pass vent cold or not.

Why are my front vents on my Chevy Trailblazer not working?

Recently my front vents stopped working on my 2004 Chevy Trailblazer. I’ve tried to recalibrate by taking out the fuse, waiting a couple minutes, putting the fuse back in, turning the car to run, letting it go through its motions, but that didn’t work. The air blows cold, but it is only coming out at the feet, side vents and defrost.

What was the problem with my 2003 Trailblazer?

This 2003 Chevrolet Trailblazer came in with the complaint that the blower would not work on any speed and that the Brake and ABS lights stay on. Since I have seen this problem before, I knew right where to go to test. then ignition switch.

The air won’t blow out the dash vents. It blows out the floor vent and the defroster vent, but it won’t change and blow out the dash vent. Any one know what I need to do to fix this problem?

Why is my defroster not working on my car?

A control switch on the dash can fall apart allowing the vacuum to escape and not reach the servos. A defroster can also fade when traveling up a hill but then return once the grade is overcome which is a signal the vacuum check valve has failed.

How does the climate system control the defroster?

The climate system is responsible for controlling the position of the defroster actuator which is connected to the air position door in the heater plenum. This actuator controls defrost, middle and lower air vents. When it fails it can do so in the defrost position and must be replaced.

Where is the defroster located in an air conditioner?

The defroster is part of the heater and air conditioner system which is housed inside of the heater plenum. The vent control system for the defroster in integrated into the operation of all temperature controls and uses forced air provided by the blower motor.

Where are the air conditioning vents on a trailblazer?

The rear seat floor vents, behind the front seats, are driven from the front passenger controller. The overhead vents, and the rear row vent on the passenger side are driven by the rear controller. To get air conditioning out of the floor vents I believe we must select both foot and shoulder levels.

Why is my Chevy Trailblazer heater not working?

While there are a variety of reasons your Chevrolet Trailblazer heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

What should I do about my Trailblazer blowing out cold air?

You guys are so funny with all these different answers…….its the passenger actuator remove it then open it up an you will see that th main wheel is broken. You can either replace the gear wheel $18 or spend $40 an up on th actuator that really does work but the gear is broken.

What is the mode door actuator on a 2003 Chevrolet TrailBlazer?

2003 Chevrolet Trailblazer: The mode door actuator..controls..airflow… Is there a simple method… Is there a simple method in replacing the ‘mode door actuator’ in a 2003 Chevrolet Trailblazer? The ‘mode door actuator’ controls directional airflow inside the vehicle.

How did I Fix my Chevrolet TrailBlazer air conditioner?

Heard the calibration take place behind the A/C controller for about a minute. Once it was quieted, started the ignition and the A/C was working perfectly again!! This fix probably saved me over $400.00 in unnecessary mechanic repairs.

What to do about a 2004 Chevy Trailblazer?

38 people found this helpful. Did exactly what was suggested by Daniel and ageary63 below for my 2004 Chevy Trailblazer. Removed the fuses (#36 and #39)and then re-inserted them after waiting about a minute. After re-insertion, turned ignition but did NOT start the engine.

Is there a problem with my 2004 Trailblazer?

CarComplaints.com Notes: It would be ill-advised to blaze any trails with the 2004 Trailblazer. Its faulty fuel gauge could leave you stranded. No one has added a helpful site for this 2004 Trailblazer problem yet.

Why does my Chevy Trailblazer not blow air?