Up for sale is a transfer case selector control switch for 4-wheel drive GMC vehicles, including the Chevy Trailblazer and GMC Envoy. This knob is a direct replacement for the original factory part, with manufacturer part number 15807881 and interchange part numbers 25965895 and 25827385. It fits vehicles from 2002 to 2009, with features such as 4-wheel drive transfer case, 2HI auto 4HI 4LO, and a black color design. This switch is placed in the center dash of the front of the vehicle and is a genuine factory original part. It is not a vintage part and has not been modified in any way.