Q: My blower motor won't turn on when it's extremely cold 2003 Chevy Trailblazer

asked by on

My blower motor won't work on extremely cold days. The rear seat blower Does work. When it's not cold the front blower Does work on all speeds. It's just the front blower that won't turn on at extreme cold temps

My car has 120000 miles.

Hi there - electrical failures when cold are tough problems, because the source is an electrical connection - switch contact, brushes in the motor itself, potentially a blower motor relay - that shrinks and loses connectivity when cold. It expands enough when warmer to conduct current. Crawling around in the cold with a voltmeter is no fun chasing problems like this. I would recommend a heater inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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 blower motor won't turn on when it's extremely cold 2003 Chevy Trailblazer

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: Q: Flex pipe

As I said before it can be replaced without replacing the entire converter assembly. If you google search the exhaust on your car you will see the flex pipe can be purchased separately. All you need to do is get...

Q: Oil pressure gauge drops, idle goes crazy and wanting to die.

Hi there. Either the engine oil pump is plugged up or failing or the engine bearings are worn causing internal oil leakage. The engine is running rough and wanting to stall due to the lack of lubrication. I recommend seeking...

Q: Q: How do I use the automatic dimming rearview mirror?

The rearview mirror is a very important safety feature that offers you visibility out of your rear window. However, at night, the glare from other vehicles reflects off the mirror, and can lessen your visibility. To limit this glare, your...

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.