GMC Filter Sort Filters In Stock Availability In Stock Price $100-$500 (90) $500 and above (53) Brand Alpine (95) Harmony Audio (48) Sort SKU: A-Z SKU: Z-A Price: Low to High Price: High to Low Least Popular Most Popular Sort by: SKU Sale Price Popularity 2004-2012 GMC Canyon Crew Cab Truck Alpine SWT-10S4 Dual 10" Sub Box... $439.95 2007-2013 GMC Sierra Crew Cab Truck Alpine Type S S-W10D2 Dual 10" Sub Box... $565.95 2007-2013 GMC Sierra Ext Cab Truck Alpine Type S S-W12D2 Dual 12" Rhino... $399.90 2007-2013 GMC Sierra Ext Cab Truck Alpine Type S S-W12D2 Dual 12" Sub Box... $649.85 2007-2013 GMC Sierra Extended Cab Truck Alpine Type S S-W10D4 Single 10 Sub... $419.95 2014 - UP GMC Sierra Crew Cab Alpine Next-Generation R-Series R2-W10D4 Single... $337.95 2014 - UP GMC Sierra Crew Cab Alpine SWT-10S4 Dual 10" Sub Box with S2-A60M... $689.85 Compatible with 01-06 GMC Sierra Non-HD Crew Cab Truck Alpine Type S S-W10D2... $456.99 Compatible with 01-06 GMC Sierra Non-HD Crew Cab Truck Alpine Type S S-W12D2... $494.99 Compatible with 1999-2006 GMC Sierra Extended Cab Truck Alpine Type S S-W10D2... $476.99 Compatible with 2007-2013 GMC Sierra Extended Cab Truck Alpine Type S S-W10D2... $465.99 Compatible with 2014 - UP GMC Sierra Crew Cab Alpine Type S S-W12D4 Single 12... $336.99 01-06 GMC Sierra 1500 Crew Truck Alpine SWT-10S2 Ported 10" Sub Box Enclosure... $204.95 01-06 GMC Sierra 1500 Crew Truck Alpine Type S S-W10D4 Ported 10" Sub Box... $414.95 1982-2004 GMC Sonoma Extended Cab Truck Alpine Type S S-W12D2 Dual 12" Sub... $605.95 1988-1998 GMC Sierra Ext Cab Truck Alpine SWT-10S2 Single 10" Sub Box... $465.95 1988-1998 GMC Sierra Ext Cab Truck Alpine SWT-10S4 Dual 10" Sub Box Enclosure... $434.95 1988-1998 GMC Sierra Ext Cab Truck Alpine Type S S-W10D4 Single 10" Sub Box... $174.95 1988-1998 GMC Sierra Ext Cab Truck Alpine Type S S-W10D4 Single 10" Sub Box... $415.95 1999-2006 GMC Sierra Ext Cab Truck Alpine SWT-10S2 Single 10" Sub Box... $234.95 1999-2006 GMC Sierra Ext Cab Truck Alpine Type S S-W10D4 Single 10" Sub Box... $184.95 2001-2006 GMC Sierra HD Crew Truck Alpine Type S S-W12D2 Dual 12" Sub Box... $384.95 2001-2006 GMC Sierra HD Crew Truck Alpine Type S S-W12D2 Dual 12" Sub Box... $595.95 2002-2009 GMC Envoy SUV Alpine Type S S-W12D4 Single 12" Custom Sub Box... $444.95 123456