Question about 1997 GMC Suburban
Your heater and air conditioner assemblies are partly vacuum actuated.
The parts underneath the dash are also largely plastic.
Many, if not most of the time, either there is a vacuum leak ( that you
probably cannot hear) or a plastic part that is sticking or has broken. Those parts like that are usually inside the housing & ductwork under the dashboard on the right side also under the glove box.
God bless your efforts.
Posted on Jan 02, 2017
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
If you have climate controls that are "slide type" knobs...likely that the cable that controls the diverter panel in the blower box is broken....
Posted on Feb 27, 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
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
Sounds like the driver's side temperature actuator or blend door are defective. Part of the dash needs to be removed to access these parts.
Posted on Nov 03, 2011
It is either the servo door could be blocked by something like a pencil falling through or something falling and blocking it from opening. Or it is actually broken. I have seen them both ways. Mine was actually broken in my Ford F250. You should still take it in to someone who can deal with it for you.
Posted on Apr 09, 2012
Tips for a great answer:
Nov 20, 2013 | 1998 Oldsmobile Intrigue
Sep 19, 2012 | 1997 GMC Jimmy
Jun 04, 2012 | 2000 Ford Focus
Apr 09, 2012 | 1997 GMC Jimmy
Mar 03, 2011 | 1997 Chevrolet K2500
Dec 03, 2009 | 1998 GMC Jimmy
May 28, 2009 | 1999 Chevrolet Suburban
Feb 28, 2009 | 1998 GMC Sierra
Feb 27, 2009 | 2000 GMC Jimmy
32 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: