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 2014 - UP GMC Sierra Double Cab Alpine Type S S-W12D2 Dual 12 Sub Box - Final... $389.95 2001-2006 GMC Sierra HD Crew Truck Alpine Type S S-W12D2 Dual 12" Sub Box... $384.95 2007-2013 GMC Sierra Crew Cab Truck Alpine Type S S-W12D2 Dual 12" Sub Box... $384.95 01-06 GMC Sierra Non-HD Crew Cab Truck Alpine Type S S-W12D2 Dual 12" Sub Box... $379.95 2014 - UP GMC Sierra Crew Cab Alpine Type S S-W12D2 Dual 12" Sub Box - Final... $379.95 Compatible with 1999-2006 GMC Sierra Extended Cab Truck Alpine SWT-10S2... $376.99 Compatible with 2014 - UP GMC Sierra Double Cab Alpine SWT-10S2 Single 10 Sub... $374.99 2001-2006 GMC Sierra HD Crew Truck Alpine Type S S-W12D2 Dual 12" Rhino... $369.95 Compatible with 1988-1998 GMC Sierra Extended Cab Truck Alpine SWT-10S2... $366.99 Compatible with 2007-2013 GMC Sierra Extended Cab Truck Alpine SWT-10S2... $359.99 1999-2006 GMC Sierra Ext Cab Truck Alpine Type S S-W10D2 Dual 10" Sub Box... $359.95 2007-2013 GMC Sierra Ext Cab Truck Alpine Type S S-W10D2 Dual 10" Sub Box... $359.90 2014 - UP GMC Sierra Crew Cab Alpine Type S S-W10D2 Dual 10" Sub Box - Final... $359.90 Compatible with 2014 - UP GMC Sierra Crew Cab Alpine SWT-10S2 Single 10 Sub... $354.99 1988-1998 GMC Sierra Ext Cab Truck Alpine Type S S-W10D2 Dual 10" Sub Box... $354.95 01-06 GMC Sierra Non-HD Crew Cab Truck Alpine Type S S-W10D2 Dual 10" Sub Box... $349.95 2001-2006 GMC Sierra HD Crew Truck Alpine Type S S-W10D2 Dual 10" Sub Box... $349.95 2007-2013 GMC Sierra Crew Cab Truck Alpine Type S S-W10D2 Dual 10" Sub Box... $349.95 Compatible with 2014 - UP GMC Sierra Double Cab Alpine Type S S-W12D4 Single... $344.99 2014 - UP GMC Sierra Double Cab Alpine Type S S-W10D2 Dual 10 Sub Box - Final... $344.95 2014 - UP GMC Sierra Crew Cab Alpine Next-Generation R-Series R2-W10D4 Single... $337.95 Compatible with 2014 - UP GMC Sierra Crew Cab Alpine Type S S-W12D4 Single 12... $336.99 Compatible with 1988-1998 GMC Sierra Extended Cab Truck Alpine Type S S-W12D4... $335.99 Compatible with 2001-2006 GMC Sierra 1500 Crew Truck Alpine SWT-10S2 Ported... $335.99 123456