BASEPLATE BX1617 1995 Lumina Sedan Not LTZ 1996 Lumina Sedan Not LTZ 1997 Lumina Sedan Not LTZ 1998 Lumina Sedan Not LTZ 1999 Lumina Sedan Not LTZ 1995 Monte Carlo Not Z-34 1996 Monte Carlo Not Z-34 1997 Monte Carlo Not Z-34 1998 Monte Carlo Not Z-34 1999 Designed to let the baseplate torsion or flex, similar to a receiver hitch, so it absorbs the forces of towing rather than rigidly transferring the forces to the frame of the towed vehicle.Product FeaturesShock absorbingDesigned to let the base plate torsion or flexPositioned for proper attachmentEasily installedLife time warranty