Q: My car stopped blowing heat and air out of the vents and on the floor.

asked by on

I have a 2010 Cadillac CTS 3.0 V6 Engine. When I turn the heat or a/c on nothing blows out of the vents or on the floor. Slowly the defroster will sometimes defrost the front windshield and sometimes I can feel some heat on my feet when I have the heater on, but nothing is blowing. The blower stopped working without any warning, such as hearing a noise or working intermittently.

My car has 49000 miles.
My car has an automatic transmission.

This may be related to a faulty blower motor or blower motor relay. Occasionally, the blower motor itself will wear out or become faulty working intermittently as the brush contacts inside the motor wear out. The blower motor relay supplies power to this motor when you turn the switch to "on" that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently. I would suggest having an expert from YourMechanic come to your location to diagnose your vehicle’s blower motor system.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car stopped blowing heat and air out of the vents and on the floor.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Three coils are misfiring. Do I have to change all three at the same time? Can I change the spark plugs first?

Ignition coils deliver the spark to the spark plugs. If you are confident that the coils are in fact misfiring, changing the spark plugs will not fix your problem. Ignition coils are coated with a varnish-like insulation that becomes brittle...

Q: Check Engine Light on, catalytic converter and O2 sensors need changing - $3000

Hi there: If you're Check Engine Light is coming on and somebody diagnosed this as a problem with your O2 sensors or the catalytic converter emissions system, it's highly possible that the trouble part are the front or back bank...

Q: Paint bubbles and rust on new car

I have seen this issue on several Equinox’s, most commonly on the back tailgate, around the edge of the door panels and under the front doors. Unfortunately, GM has issued no recalls or Technical Service Bulletins(TSB) to address this issue...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...