2006 GMC Sierra 1500 Crew Cab Pickup 69.2" Bed Rear: Drum. 2005-2006 GMC Sierra 1500 Extended Cab Pickup 78.0" Bed Rear: Drum. 2005-2006 GMC Sierra 1500 Standard Cab Pickup 96.0" Bed Rear: Drum. 2005 GMC Sierra 1500 Crew Cab Pickup 68.4" Bed Rear: Drum.
