2006 Chevy Avalanche climate control fan won't turn off. Even when the engine is off. I must remove the fuse to keep it from running.

sounds like the fan solenoid is stuck. or keep in mind when defroster is on or any climate control in this car the ac compressor will run .wich in turn will kick on the electrick fan .try it with the climate control completely off. let me know

the temperature sensor can cause a rich mixture at the wrong time by providing a false reading of cold engine

How did you determine that the sensor failed. Did the check engine light come on? When you say that the fan won't turn, do you mean that it won't turn on and run or that you can't physically turn it by hand. To determine this, disconnect the electrical connector to the fan and try to turn it by hand. It should turn easily. If it doesn't then it must be replaced. If it does then reconnect the electrical connector to the fan and try to operate it by disconnecting the temperature sensor lead and placing a jumper wire between the terminals of the harness. turn the AC control to AC/MAX and turn the ignition key to on. If the fan runs then the problem is the sensor. If it doesn't then check the fan control relay and any related fuses. WARNING : Use extreme caution when testing the fan circuit. Never attempt to turn the fan with the electrical connector in place. The fan can operate at any time even if the engine is off.

sounds like a faulty climate control switch...
Call your local salvage yard and ask how much one is where you live...

If you have the automatic climate control and the blower motor won't shut off then you have a failing Blower motor speed control module. Something inside this module goes bad and the result is a blower motor that keeps running at times even though the engine is off and the key is out of the ignition. The module isn't repairable but has to be replaced. I believe it is located behind the passenger side of the dash panel.

The Trainer 40 When the compressor won compress

back lighting for a couple of the climate control dash board buttons are not working. ?????? wouldn't be a fuse , bulb probably . You would need to take the component apart to replace the bulb .

Your system is computer and hold the a/c switch and the switch to the left at the same time and it will recalibrate it self and the doors will work right, Hope this helps you

I had the same problem on my 2004 GMC Yukon XL.
Still under warranty the shop was able to reprogram the climate control system and tell what was wrong rather quickly with a OBD computer.
That’s when they found both of the climate control (driver and passenger) side actuators were bad and the control unit that tells the actuators where they should be was also bad.
The truck was in the shop with most all the dash, seats, consol, and steering wheel out for a week. The cost was over $1200.00.
That has seamed to fix the problem. Good Luck.

Does your vehicle have manual or automatic climate control ? The blower motor control processor may be the problem .
Chevy GMC Blower Fan Stuck On

DISCONNECT THE ECU FUSE FROM YOUR FUSE BOX. WAIT 15 SECS AND THEN RECONNECT AND START YOUR VEHICLE.