Question about 2000 GMC Sierra
2004 gmc 1500 sierra heater control stuck on defrost
Defrost is the default position. Is the control a autyomatic temperture control unit? ( you set the temp and select automatic) if it is the system is completely electronic. You push the buttons and the control still says defrost or can you select something else and the control shows it but it just keeps coming out the defrost? If the control changes and the air comes out the defrost anyway and the cheack engine light isn't on, then the problem can be blown fuses or an air door actoater not working. Does the dash emit a clicking sound? if it does with the covers off the bottom of the dash reach around touching the different pieces till you touch the idem that is clicking. this is an acutor motor, or blend door motor. they have gears in them that wear out and break the motors aren't repairable and you just replace the ofending motor. the door that is moves can be stuck. and may have to be freed up with blaster, WD40, or other rust buster till it moves easy. maybe after getting the door to move smoothly you can get the old motor to move the door wiithout having to install a new one.
Posted on Jan 06, 2010
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Jan 27, 2013 | 2003 GMC Sierra 1500
Feb 09, 2012 | 2007 GMC Sierra 2500HD
Sep 22, 2010 | 2006 GMC Sierra 1500 2WD
May 05, 2010 | 2005 GMC Sierra
Jan 30, 2010 | 2000 GMC New Sierra 1500
Nov 12, 2009 | 2003 GMC Sierra 1500
Sep 09, 2009 | 2000 GMC Sierra
May 30, 2009 | 2005 GMC Sierra 1500 Hybrid
Mar 30, 2009 | 2004 GMC Sierra 1500 Crew Cab
1,608 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: