I used to tow a 1992 Chevy Lumina APV which is in that class of ride.
Here is the basic information you need:
Store : Remco
Enter your vehicle's particulars on the left. And the main frame tells you what you need to tow.
In my case I used an Axle Lock (Front wheel drive) so that when I was towing it was a true trailer, no power to the wheels, (They make a device that does that for Rear Wheel too).
On my new towed (A car) I can not use that device because there is not enough room to reach in and operate it so I use an LP=1 Lube pump.
The Lumina towed for free, that is it had NO effect on my MPG, the car, however, DOES even though it is just over half the weight,, My suspusicion is this is do to improved air flow.. The Lumina's effect on air flow balanced it's weight. I would not expect this, I got lucky.