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Cabin filter o4 Sierra

Tiny
LAPATAUME
  • MEMBER
  • 2004 GMC C1500
  • V8
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
I have a 2004 sierra I need to change the cabin filter I know it has one I can see it people say it dont but it does how do I get at it to remove it the system seems to be sealed
Saturday, January 1st, 2011 AT 2:23 AM

7 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
This Article has been updated by bulletin #PIT3330, dated December 22, 2004.

Condition/Concern:
A customer may inquire about the availability of the passenger compartment air filter.

Recommendation/Instructions:
Starting in 2003 model year, the passenger compartment air filter is no longer available as a factory option. With the redesigned HVAC case, there is no longer a cavity for the filter. The GM parts catalog indicates there is a replacement filter available; however, there is no provision for it.
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Saturday, January 1st, 2011 AT 2:44 AM
Tiny
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As you can see in the picture there is one there but how to get at it is the question I see no clips no screws nothing to get at it do I have to remove the whole HVAC duct to get it out because it stinks and when I touch it its wet
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Saturday, January 1st, 2011 AT 3:31 AM
Tiny
WRENCHTECH
  • MECHANIC
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That's not a filter. That is your evaporator core and I would be very careful not to puncture or damage it or you'll have a bigger headache that you want to deal with.
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Saturday, January 1st, 2011 AT 12:55 PM
Tiny
LAPATAUME
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  • 4 POSTS
Oh ok that makes sence then I dont understand why the vents blow stink air thoe and its wet inside there thats my whole issue it smells like stale water
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Saturday, January 1st, 2011 AT 6:27 PM
Tiny
WRENCHTECH
  • MECHANIC
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Evaporators are always wet from condensation. They grow bacteria after a while that causes the odor. Get one of those bug spray bottles with a spray wand and fill it with Lysol and spray it all over that evaporator and that should take care of the odor.
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Saturday, January 1st, 2011 AT 9:30 PM
Tiny
LAPATAUME
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Thank you very much for the help I was going nuts trying to figure this thing out ill try the lysol and hope it works I dont even use my heat because of the smell that come out
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Saturday, January 1st, 2011 AT 9:54 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
It will work as long as you have access to spray it directly on the evaporator. I've done it many times. Don't be afraid to saturate it. They sell a lot of products for this but the Lysol is the best bet.
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Saturday, January 1st, 2011 AT 10:00 PM

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