HAVIS's C-HDM-139 heavy duty vehicle specific mounting base front mount for the Chevrolet G-series Express (1997 – 2019) and GMC Savanna (1997 – 2019). It mounts to the front (forward seat bolts) of the passenger seat. The gusseted and welded design mounts independently of a console. It is made from 10-gauge steel. Includes support brackets (additional C-HDM-401 not needed).