APDTY 012175 4WD 4x4 Four Wheel Drive Dash Mounted Selector Switch Fits 2004-2007 Buick Rainier / 2002-2009 Chevrolet Trailblazer or GMC Envoy / 2002-2004 Oldsmobile Bravada (Check Description) 4 Position Switch Includes 2-Wheel Drive Switch Auto 4WD Switch 4WD Low Switch 4WD High Switch