2006 GMC Yukon XL Denali Available at Corwin Public Wholesale in historic downtown Nampa, 323 8th Avenue South.Priced below KBB Fair Purchase Price! Clean CARFAX. AWD.2006 GMC Yukon XL Denali AWD Vortec 6.0L V8 SFI Onyx BlackCorwin Public Wholesale! Located at 323 8th Avenue South, Nampa, ID 83651. Friendly service and aggressive pricing is why we are your pre-owned vehicle dealer serving, Nampa, Boise, Meridian, Caldwell, Kuna, Eagle, Emmett, Idaho City, Wilder, New Plymouth, Star, Middleton, Weiser, Payette, Horseshoe Bend, Mountain Home, Idaho, and surrounding states.