Question about 1999 GMC Sierra
Defrost floor and panel wont blow air
Are you saying you don't have blower at all? Defrost, floor and panel are the only three separate modes you have. If it's not blowing at all and the fuses are good, check the wiring behind the glove box. There's a two wire plug with a large red wire just about center of the glove box opening that's known for burning out. If it is you'll see the burned spot on the connector or wont be able to disconnect it.
Posted on Jan 01, 2014
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
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
the resister block needs changing... oddly enough i'm unsure of what fan you are saying is not working.... if it's the front.. the resister block is located on the duct work under the dash for the air... near the fan... you will see a connector going into the side of the duct work. two screws and the block comes out... should be fairly obvious for the rear one but it will be near the fan.
Posted on Apr 16, 2009
either a vacumn pipe is broken or the ends split so its not passing a vacumn to open the flaps,where they are and how to get to them i cant help because i have never worked on one as they are not here in spain.check the engine end first though .Look for some small rubber pipes running from the inlet manifold
Posted on May 30, 2009
Tips for a great answer:
Dec 09, 2016 | Ford Ranger Cars & Trucks
Mar 08, 2015 | 2001 Ford Windstar
Mar 24, 2013 | GMC Yukon XL Cars & Trucks
Sep 26, 2012 | 2000 Chevrolet Silverado 2500
Oct 15, 2009 | 2001 Dodge Durango
May 30, 2009 | 2005 GMC Sierra 1500 Hybrid
Mar 12, 2009 | 2006 Ford F-250 Super Duty
Jan 18, 2009 | 1997 Chevrolet K1500
Dec 05, 2008 | 1993 Chevrolet Corsica
Jul 29, 2008 | Dodge Ram 2500 Cars & Trucks
87 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: