When I am towing, everytime i go over a bump or the H2 gets loaded down with heavy tongue weight over a bump, I hear a heavy creek in the back. Its only when towing and it happens on both of my H2's.

Does anyone know what the heck that is and what to about it?

Does it happen to anyone else when they tow their boats or 4 wheelers or whatever?

 

Is it the suspension or airbags bottoming out

 

it sounds like the rear door is squeaking everytime a load is thrown to it....like going over a dip and the truck squats. It sounds like the rear gate is creeking but I lubed it and it still doesnt go away.