I am sure this has been discussed but can not find it.

I have an 02 Excursion PSD 4x4 that sags terribly in rear when my boat is hooked up. My tongue weight is not abnormal (It barely made my 01 Duramax 2500 sit down at all)

I am looking for any advice.

Many thanks

 

"Air Lift" or "Firestone" air-bag suspension assist. They're adjustable. Just think of the old Hi-Jacker air-shocks, but more refined and durable.

The X suffers from having the weakest of rear leaf springs among the SuperDuty line of vehicles from FMC.

PS - Welcome to the forum!