Climate controls stopped working? Seamlessly restore operation by easily swapping the malfunctioning original module with this fully tested replacement unit. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Kenworth C500: 2002, 2003, 2004, 2005, 2006] - [Kenworth T300: 2002, 2003, 2004, 2005, 2006] - [Kenworth T600A: 2002, 2003, 2004, 2005, 2006] - [Kenworth T800: 2002, 2003, 2004, 2005, 2006] - [Kenworth W900: 2002, 2003, 2004, 2005, 2006]