Sorry, but there ain't one!
Looks like in 2003 and newer Tahoe, Suburban, Silverado, and Avalanche vehicles, they no longer have an in cabin air filter.
NO.
the 2003 expedition does have cabin air filter
No it does not.
A 93 model does not have a cabin filter. SORRY
No, a 2003 Durango does not have a cabin filter.
There is no cabin air filter on the 2003 Chevy avalanche
there is none
It does not have a cabin filter.
A 2003 Liberty does not have a cabin filter.
Vehicle does not have a cabin air filter
The 2003 Ford Explorer cabin air filter can be found behind the dashboard, on the passenger side. The cabin air filter should be labeled as such.