Frame and Body Mounting

Frame and Body Mounting

The frame is comprised of:

- steel channel 2-piece rails

- riveted crossmembers (except for the transmission support crossmember)

- bolt-in rear crossmember (trailer hitch)

- bolt-in fifth wheel trailer hitch (optional)

The vehicle body sits on rubber body supports. Lower and upper body supports keep the vehicle body from sitting directly on the frame.

A kit is available to repair the subframe.

For diagonal or X-frame checking, refer to Body & Frame / Description and Operation. When welding is carried out on a vehicle, refer to Welding.

Body Support Mounts

The body support mounts:

- secure the body to the frame.

- cannot reuse body support mounting fasteners. Install new fasteners for each fastener that has been removed or loosened.

- cannot be lubricated during body support mount installation.

Body Support - Front End Sheet Metal (FESM) Mount










Body Support - No. 1










Body Support - No. 2 (Crew Cab Only)










Body Support - No. 3