The key to your search is your truck.? ?It is a 10 year old 5.7L Burb with 4WD.? ?That is not that much of a tow vehicle to put it bluntly.? ?If you have a 3.73 axle and the optional trailer towing package, the listing for the 19
99 version is 6500-lbs but you need to deduct about 800 lbs for the 4WD to give a rating of only about 5700 lbs.? ?Now that 5700 lb rating is for a new truck.? Ten years old is not a new truck.? Deduct another 20% from that rating to give you a rating of about 4560 lbs.? ?If you plan to tow in the mountain or Pacific west, make that 30% for a rating of 3990 lbs.
It is difficult to tell from your description which model Jayco you are talking about.? ?I will assume is the 26BHS as shown on the
www.jayco.com website.? ?That bad boy has a gross vehicle weight of 8180 lbs, a tare weight of? 6155 lbs.? ? Your old Burb is under-rated for pulling an
empty 26BHS much less a fully loaded one.? That that is if the Burb were brand new.? ?Ten years old, you are not going anyplace very far or up any hills beyond one thrown up by a gopher.
To cut this short, it is time for a new truck.
Brakes and anti-sway mechanisms we should save till you correct the truck issue.