CHEVROLET 1500 to 3500 (2007-2013) Silverado (2007-2013) Suburban (2007-2013) Tahoe (2007-2013) GMC Sierra (2007-2013) Yukon/Yukon XL (2007-2013) Included in the Kit: Vehicle Base: DS-144 Lower Tube: DS-LOWER-9 Upper Pole: 7160-0178 Motion Attachment: 7160-0341 Support Brace: 7160-0230 Note: No substitutions can be made to the kit.