Behind-the-Seat Storage for 2004-2007 Chevy Silverado & GMC Sierra 1500 Crew Cab (Classic) | DÜHA #10023 2008-2016-ford-f550-super-duty-supercrew--with-60-40-split-seats--esr2733813 the under-seat floor sits wide

the under-seat floor sits wide open

The original Silverado and Sierra Extended Cab — the 1999-2007 classic body — has earned a reputation for running forever

This is a behind-the-seat unit

set it in the well

The one-piece shell won’t flex

Behind-the-Seat Storage for 2004-2007 Chevy Silverado & GMC Sierra 1500 Crew Cab (Classic) | DÜHA #10023 2008-2016-ford-f550-super-duty-supercrew--with-60-40-split-seats--esr2733813 the under-seat floor sits wideThe 2004 2007 Silverado and Sierra 1500 light duty Crew Cab the classic body has a narrower gap behind the rear seat than its HD sibling, and #10023 is molded to fit that specific 1500 LD space. This is a behind the seat unit, not an under seat one: it stands up against the cabs back wall behind the bench. It is sized for the 2004 2007 1500 light duty Crew Cab only the HD trucks use a different unit so the fit stays tight with no floor space