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.

Why is the heater not working on my Buick Enclave?

Not having a functioning heater makes driving much less comfortable, and can be a sign of certain issues. At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue.

What to do if your Ford Fusion heater is not working?

When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings. If the resistor isn…

Why is my heater not working on my Buick Encore?

If you have a heater core that clogged, it’s not going to be able to pass coolant through. Without the warm coolant going through it, there can be no heat. A bad heater core can also leak, so watch out for that. Feel your passenger floorboard to see if it’s wet.

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.

When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings. If the resistor isn…

Where does the HVAC blower go on a trailblazer?

My 2004 Trailblazer EXT V6 HVAC mode selection does not change. Currently the blower is only blowing out the floor vents. When I depress the MODE button the display cycles thru the various options. However, the blower only comes out at the floor.

Why does my Chevy Trailblazer stall when the a / C is on?

Make sure you put the hose on the underside of the air intake box back on. If this is not installed, it will cause a vacuum leak. i cleaned the throttle body, but now it’s worse! Also the service engine light is blinking. The engine still turns off when i turn the A\C on.

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.

What happens when the blower fails on a Chevy Equinox?

When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.

What happens if the heater control valve fails?

When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p…

How much does it cost to replace a blower on a Chevrolet TrailBlazer?

The average cost for a Chevrolet Trailblazer Blower Motor Resistor Replacement is between $117 -$128. Learn More Good news! We found 31 RepairPal Certified shops near you.

Why does my HVAC blower motor stop working?

The HVAC blowermotor may stop working at one or more speeds due to a faulty blower motor resistor block. Our technicians recommend to confirm the resistor is at fault by first checking the operation of the switch.