1999-2006 Chevy Silverado/GMC Sierra Extended Cab Dual 10" Sub Box | Skar Audio
Amazon.com: 2001-2006 Chevy Silverado/GMC Sierra HD Crew Cab Dual 10 Downfire Subwoofer Box : Electronics
Amazon.com: Liphontcta 99-06 Chevy Silverado/GMC Sierra Regular Cab Dual 12 Subwoofer Box with Amp Space : Electronics
Dual Sub Box 2003-2006 GM Sierra 1/2 ton Crew - SSA STORE
Custom Level 5 Front Firing Subwoofer Enclosure for the 2019-2024 GMC – Sounds Good Stereo Online
BLACK 12" DUAL PORTED SUB BOX, FITS 07-18 CHEVY SILVERADO EXT-CAB
Amazon.com: American Sound Connection ASC GM2X12AVECL Compatible with Chevy Silverado or GMC Sierra HD Crew Cab Truck 2001-2006 Dual 12" Subwoofer Underseat Sub Box Speaker Enclosure : Electronics
Discontinued Obsolete SKU | MTX - Serious About Sound®
Dual Sub Box (behind rear seat)2001-2006 GM SIERRA HD CREW - SSA STORE
Chevy Silverado Crew Cab Sub Box GMC Sierra Crew Cab Sub Box Sub
Custom Level 5 Front Firing Subwoofer Enclosure for the 2019-2024 GMC – Sounds Good Stereo Online
Discontinued Obsolete SKU | MTX - Serious About Sound®
DUAL SUB BOX 2001-2006 GM SIERRA CREW HD - SSA STORE