Question about 2002 GMC Sierra 2500HD
Every thing works but dash vents, floor defroster
Usually a faulty blend door under the dash. The blend doors direct air thru the heater core and the vents.
Posted on Jan 12, 2013
A 6ya expert can help you resolve that 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.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: defrost vent door wont open
sounds like you have a vaccum leak or a blockage in the blend door area of the HVAC system most of the doors are controlled by vacuum if not by vacuum on of the servo motors that control the blend door is not functuning properly. Hopr this is helpfull
Posted on Jan 17, 2009
I assume you have the dual climate control feature on your truck. it sounds like you have door problems. The heating system has several doors inside the box and duct work that divert the air from defrost to face and feet...i'm not 100% sure if the ones in your truck are electronic or vaccum, but i think they are electronic. From time to time the actuators that control the door go out, as every electric motor does. You need to find the ones that have quit and replace them. It is possible that the arm(s) on the actuator(s) have broken loose from the doors and are working but not pushing or pulling the doors properly...if might help to remove the front seats...just to help save your back....working under the dash is hard on your body....and it take a good half day to remove the dash, so working under it is actually less work.
Posted on Mar 13, 2009
Is it a new vehicle? I had a new vehicle that had the same problem. Answer was that the holes weren't punched out of the vent.
Posted on May 23, 2009
Tips for a great answer:
Nov 14, 2016 | Cars & Trucks
Jul 14, 2014 | 2000 Buick Regal LS
May 01, 2014 | 2004 Ford Crown Victoria
Jun 25, 2012 | 1993 Buick LeSabre
Jul 02, 2010 | 1992 Chevrolet G20
Dec 19, 2009 | 1999 Jeep Grand Cherokee
Jun 16, 2009 | 1999 Cadillac DeVille
Mar 12, 2009 | 2006 Ford F-250 Super Duty
158 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: