Amazon.com: Compatible with 2014 2015 2016 2017 2018 2019 Chevy Silverado Crew Cab Alpine S-W12D4 Type S Car Audio Subwoofer Custom Single 12" Sub Box Enclosure Package : Electronics
2014-2018 Chevy Silverado/GMC Sierra Crew Cab Dual 12" Sub Box | Skar Audio
2003-2006 CHEVROLET SILVERADO 1500 CREW Triple sub box - SSA STORE
2014-2018 Chevy Silverado/GMC Sierra Crew Cab Dual 8" Ported Sub Box | Skar Audio