what should be done to the suspension of your truck

The truck's axle and wheel rating is more than 8,900 lbs. so your are over its rated capacity with more than 5,800 lbs. in the bed. Payload is based on weakest link and usually it is the tires which are easily upgraded.

What is need to handle the weight of a camper varies by truck make, model, and year. The frame on a 2011 GM truck is substantially stiffer than on a 2010 GM truck. Same applies to the 2013 Ram 1-ton and 2014 3/4 ton trucks compared to earlier Ram trucks. As was already recommended, first try your truck as is and evaluate its handling.

With the extra weight the stock shocks are likely to be the first item that needs to be replaced. The Bilstein 5100 or Rancho 9000XL are commonly used.

Air bags are a mixed bag so to speak as they help with the load carrying but tend to hurt handling. Look for threads on how people have tuned their rigs to minimize the downsides of airbags.

Some trucks with lots of frame flex will benefit from a heavy duty rear anti-sway bar. Some benefit from adding one to the front. It makes no sense to generalize though as some trucks do not need them. My 2011 GM SRW truck handles a 4,000 lb. camper setup with the factory stock front suspension and only the addition of SuperSprings to the rear.

A DRW truck is going to be different and although the outer tires can provide more support for the camper the outer tires also cause more frame flexing than with the same load on a SRW truck.

monicarick01 already have airbags on the truck so it will require a test drive to see how stable the TC rides in the rear before they invest in suspension. I am north of Seattle and can offer my help or show you what is installed on my truck if you have questions. Luckily, TorkLift is a local company and they can also go there to see the products made.

I would be willing to bet, at a minimum you will need air bags and stableloads. I'd start there. Next, Shocks like the Rancho RS9000XL

Being over or under GVWR doesn't mean your safe or unsafe. Being over your trucks axle/tires/wheels and spring capacities is unsafe.

You own it now so take the truck to the scales and get a front and rear axle numbers. Now load the camper on the truck and repeat the weighing. Now you have some real world numbers that will tell you if your actually over your trucks rear axle/tire ratings.

Now, once assured the truck isn't over axle/tire capacities, others make a good point on take a trip and see if the truck needs anything. No cents/sense wasting money on bags/suspension help if you don't need them.

Just a comment on your weights. I suspect the wet weight of your camper is going to be more like 5,000 lbs if you go with full tanks. My 2013 AF 1150 carried by a 2013 gas F350 DRW crew cab in Lariat trim with 3 people, a dog, loaded for camping and full tanks registered 13,700 lbs or so. If you have a diesel add another 900 lbs. Plan accordingly.

As long as you are within your wheel and axle weights, start with no suspension modifications. You will then see how much sag, roll and bounce you have and will be be able to correct for it. We could suggest good upgrades for your truck, but you may not need all of them and the money would be better spent camping.

Though I have been a memeber for a couple of years it has been because I owned a TT and then a 5th wheel. I am new to the TC lifestyle so I figured I would ask the experts. Thanks for your reply

Torklift Stableloads will work wonders.

Monica and Rick,
Welcome to the forum. For the most part, we are a friendly, helpful band. in retrospect, I see you joined two years ago so you already know this. The usual protocol is to run whatcha brung and see what happens, taking a weekend away from hazards like traffic and people to feel out the new digs. Nothing like personal experience to trend you in a good direction. What would be 'safe' or 'adequate' for me may not apply to you. Your driving style will change, no doubt. Also, your tolerance to 'small' will be tested. We are used to camping in a tiny box, and it is our refuge from the woes of the world. These are my views on suspension:
1. Air bags have a lot of 'recoil' that you must calibrate (with pressure) and get used to.
2. Big, dumb old leaf springs are tried and true. We have two sets of one-ton secondaries (aka: overloads) on the rear axle and Stable Loads to make them engage at a lower loading weight. No recoil. It is about right for our 1745 pound wet camper.
3. Anti-sway bars, front and rear are a must for highway driving.
Another thing is your tire rating. Even on a dualie, you want E rated tires all around with at least a 3500 pound load rating. Tires are usually the weakest link in the suspension/drivetrain chain.
regards, as always, jefe