1961-1964 Chevy Impala Wagon Tailgate Window Channel Guide LEFT USEDThis 1961 1964 Chevy Impala Wagon Tailgate Window Channel Guide is an original used GM part. The channel attaches to the end pillar of a wagon and guides the tailgate glass along the upper vertical section. NOTE that the felt channel will need to be replaced and that the upper section will need to be replaced with a reproduction felt channel with a beaded end.