Along the same lines of last post, is there a Cabin Air Filter on a 1998 GMC 2500 4x4. Last years hunting season has left a strong smell of dust in the cab whenever the heater/AC is ran.

Look at these websites to get all the info you'll need. They have not figured out 2003 & 2004 quite yet. Found that the socket sizes may not be exactly right but they are close.

Instructions (how to):
http://www.wixconnect.com/assets/wixcabinairbrochure.pdf

List of models & years that have filters:
http://www.problemsolved.com/air/applications/auto_list.htm

you'll probably have to take the duct apart and clean it out. it's probably full of leaves, dirt and other crap. theres a few deodorizer products you can spray in the vents but they don't help much if the a/c evaporator and heater core are jamed full of crap. compressed air helps loosen up dust and dirt but makes a hell of a mess when you turn the blower on.
good luck

I just cahanged the ones on my 99 GMC. It only took about 30 minutes and that encluded a trip to two auot parts for the filters. There are 2 in there. One in back of the first one. At Advance Auto they were $16.00 for the 2. One screw no matter how i tried would just not go back in. So other that that its a easy job.

I have a 99 Sierra SLT with the center console, do I have to remove that? I can't seem to get the cover off no matter how many of those screws i pull out :(
I also remember having a hell of a time getting behind it when i ran the power wire for my stereo.