Question about 2001 Chevrolet Suburban
My rear heat controls work, but the front does not. Blower works but no heat from front controls.
I'm just a regular diy'er, no training. Had same problem, 2001 Suburban, front blew cool air when heating, rear heat warmed up nicely. After reading other posts on other boards, took off the the heater hose clamps (make sure you remember which is which) at the firewall. With low pressure garden hose flushed left inlet/outlet first till I got good flow, then the right side, and back to left. Reattached hoses, started and tested. Heat blows just fine. I can't think of anything that could be damaged by this, but check with someone who know something first before trying it on your vehicle, but it worked for me. So far so good.
Posted on Oct 25, 2009
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Posted on Jan 02, 2017
Here is the order of checking;
) Check maxifuse 105
) Check fuse 24 on interior panel
) Check blower resistor
) Check power and ground at motor.
) May be bad motor
Posted on May 18, 2009
I had the same thing happen today except rear control works period (no conditions). I am going to test the leads to the front blower first while on. If voltage is there, then I will check the motor brushes - could be a cheap easy fix (~$6 + time). Alternatively you could replace the motor ($50+ plus time). If no voltage there then it is probably electronics.
It could be a resistor(s) but I believe it is unlikely that *all* the resistors would go at the same time.
Posted on Dec 18, 2008
The first thing I would do is check to see if a fuse is blown or bad relay. Then I would unplug the blower motor with a test light make sure you are getting power to the blower located on the far passenger side of the vehicle under the dash if it has power and good ground then suspect vaulty motor. If you are not getting power at the plug then you might have a bad switch or resister. If it does have a blown fuse remember they usually blow for a reason like faulty wiring or even a in the motor itself. I would also recommend that you change the ac cabin filters behind the glove box if they have not been changed most people neglect them on that vehicle because they are a little more difficult to change, after removing the glove box there is a metal bracket in the way of opening the cabin filter compartment. They wont cause a blower motor to not work, however they do restrict airflow to the evaporator and they protect you from pollen, dust, and even exhaust gases. Hope this helps.
Posted on Jul 08, 2009
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