Q: When i shut off my car the heater blower keeps going with unit off and car off. 2006 Chevy Trailblazer

asked by on

Blower motor keeping running with heat unit off and car off only stops when i remove relay been going on for days now and now no heat or air at all

My car has 150000 miles.
My car has a manual transmission.

Hello - either the relay is stuck in the "On" position from burned contacts or the heater switch is similarly stuck in the "on" position (internal contacts at least). I would recommend an electrical 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?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
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. When i shut off my car the heater blower keeps going with unit off and car off. 2006 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: Heater not working

This may be related to a faulty blower motor or blower motor relay. The blower motor is a unit inside your vent system that blows warm air from the heater core to the vents when the heater is on or...

Q: ABS reacts while braking at low speeds

I am having a little trouble fully grasping the problem you are having but I will provide the most full answer possible. If the ABS system is engaging and causing the brakes to lock up there could be a...

Q: Fan never stops.

Hey there, thank you for asking about your 2007 Mercedes-Benz CLK550. This is a common symptom of a failing coolant fan relay. This relay controls the cooling fans and cycles them on and off based upon temperature. When this relay...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...