Compatiable Vehicles *Chevrolet -1500/2500/3500 C/K (2007-2009) -Avalanche (2007-2013) -Silverado (2007-2013) -Silverado 2500/3500/HD Models (2007 new body style-2014) -Suburban (2007 new body style-2014) -Tahoe PPV (2007 new body style-2014) -Tahoe SSV (2007-2014) *GMC -1500/2500/3500 C/K (2007-2009) -Sierra (2007-2014) -Sierra 2500/3500/HD Models (2007 New body style-2014) -Yukon/Yukon XL (2007-2014) Kit Components: -Vehicle Base (Item No. DS-144) Vehicle Base attaches to the passenger side seat studs. Designed using heavy gauge steel for long-term durability. This base will not work with the Chevrolet 3500 with a PTO, the recommended base is the 7160-0185. -Lower Tube (Item No. DS-LOWER-9) The Lower Tube provides vertical clearance over the center console or the seat. -Upper Pole (Item No. 7160-0178) Center Upper Pole allows for closer mounting to the dash and less stress on the vehicle mounting equipment as weight is centered on the pole. Wrench is needed for loosening, tightening or height adjustment. -9" Locking Swing Arm - Mongoose (Item No. 7160-0220) Locking Slide Arm can rotate around 360° with locking points every 15°. Slide Arm can extend out from 9" to 13" from center pole and locks automatically in the retracted 9" position. Motion Attachment has tilt capabilities up to 90° forward/26° backward and can be swiveled up to 360°. Motion Attachment works with VESA 75mm, Gamber-Johnson 2x4, NEC or AMPS hole patterns. -Support Brace (Item No. 7160-0230) Support Brace provides additional mount system support in rugged driving conditions and increases mounting system rigidity. Must order as is. There are no substitutions.