Blower Motor works sometime on 2006 Chevrolet Colorado

My heater/AC fan will work all the time in high speed. All other speeds will not work sometimes. Have you an idea what’s wrong with this?

by in Batavia, NY on July 22, 2012
3 answers 2 comments
ANSWER by on July 22, 2012
system electrical diagram and circuit description of operation......then you can guess all you want or diagnose it with the correct info & troubleshooting guide.
ANSWER by on July 22, 2012
BLOWER RESISTOR! High speed is not controlled by the resistor,but the lower speeds are. Located near the blower motor behind glove box.
1 person likes thisFlag inappropiate
COMMENT by on July 23, 2012
This is very helpful. Is the resistor in the cab or on the firewall?
COMMENT by on July 23, 2012
LOOK BEHIND GLOVE COMPARTMENT!! Maybe you should seek a mechanic's help. GOOD LUCK.
ANSWER by on July 23, 2012
ck blower motor resistor it defaults to high if its bad most of the time
3 people like thisFlag inappropiateReply
Related Items:
My 2005 Chevy Colorado's heater/ AC blower motor control knob only works only on high (No.4 kno...
The heater - AC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block.
I have a 06 Colorado Z71 FWD. It has 100K miles. Since the truck had 80K miles the FWD has no...
sometimes I can start out in the morning and my airconditioner will only work on 4 then later in the day it will also work on 1,2, and 3.Other times it will start out working on all the speeds and ...