There should be a "Post your cabin air filters" topic and pinned in this section. I just changed mine on my 2002 Silverado. I just checked and these have been in there for 2 years and 26 days and have 17,699 miles on them. I try to change the cabin air filter out once a year but as usual I missed a year. The one picture is what fell out as I pulled the filters out.
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