View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your 2003 GMC Sierra 3500 with shifters? At Tunersports.com we carry a huge selection of the top name brand performance shifter parts and accessories.
 IN STOCK - DROPSHIPS 1604720BD Diesel Shift Kit - Chev Allison 1000 2001-2005 5spd 2001-2006 GMC Sierra 3500 SLE / SLT 2002-2005 GMC Sierra 3500 Base $433.95 |
 OUT OF STOCK 1031361BD Diesel TapShifter - Chevy 2003-2005 Duramax Allison 1000 - Button Gear Selection 2003-2005 GMC Sierra 3500 Base / SLE / SLT $482.95 |
 IN STOCK - DROPSHIPS FPE-TAPSHIFTER35The Fleece Performance TapShifter allows you to shift your 2001-2005 GM Allison Transmission with the touch of a button just like the 2006 and newer trucks. Perfect for towing, drag racing, daily driving and everything in-between, the TapShifter installs... Fleece Performance 03-05 GM Duramax 6.6L LB7 / LLY GM/Allison TapShifter 2003-2005 GMC Sierra 3500 Base / SLE / SLT $414.81 |