Originally Posted by 2kg4u
If you have the access panel, you have the cabin air filter as an OEM option.
On 2000-2002 H-bodies, I do not know that the cabin filter itself was omitted on certain low line vehicles and do not know if the access panel was omitted as well by using a blank cowl plastic. IIRC, the skeleton for the AC Delco filter snapped into some metalwork under the cowl.
For 2003, I do know that the cowl had the access panel, but when I went to check the filter after 6 months, there was no filter and not support skeleton for same.
I asked the service manager who suggested I buy a filter and skeleton at the parts counter and they snapped it in for me.
I use the Purolator replacement filters which work fine--and they are MADE IN THE USA unlike all of the others I could find.