In-Cab Air Filter? 2004 Silverado
 

2004 Silverado 1500 Ext Cab 4WD 5.3L engine.

I heard that there is an air filter inside the truck for passenger comfort. Where is that located? Thanks, LBJ

Re: In-Cab Air Filter? 2004 Silverado
 

GM removed that starting in 2003. The indention is still on the HVAC box and you can retrofit it. There's a thread somewhere out there.

Re: In-Cab Air Filter? 2004 Silverado
 

Heres a video showing you how to access it.
https://www.youtube.com/watch?v=35u7qASIG5U
Like it was said above a 2004 wouldn't have the filter any longer. My 2002 Yukon XL had it- the worst part was getting the screw started for the trim panel above the transmission hump.

Re: In-Cab Air Filter? 2004 Silverado
 

Thanks guys, I never heard any year model reference on the TV. One of those many car repair/redo shows. LBJ

Re: In-Cab Air Filter? 2004 Silverado
 

There's a cabin air filter retrofit post listed in the HVAC section of the FAQ sticky.
There's actually a GM TSB showing how to install the filters.