My 5th wheel shudders violently when towing.
I have a 2015 GMC 2500HD Crew Cab diesel with a B&W turnover ball hitch and a B&W companion hitch towing a 2006 Cedar Creek Silverback 29LRLBS (unloaded weight of 10,070 lbs. The hitch was installed ...
Forum Discussion
Check that the pads of the Companion and make sure they set firm on the bed at the rear of the hitch. Others with the newer GM's (2011 to current) have a slight arch in the bed with the apex at the wheel wells, including mine. This results in the hitch flexing for and aft causing the pads to dent and cut the bed where the pads stop. This may be causing your problem, just a thought.
