First of all, all extended warranties are tied to the vehicle and can not be transferred to a different vehicle.
Coachz, you should should read your extended warranty contract and discover a couple of things:
Is it transferrable to a new owner? If so, what is the transfer fee? Can you surrender the policy for a partial refund of what you paid for it? What does it cover? What is the deductible? What is the exact max mileage and exact end of coverage if miles not exceeded first dates of the contract?
You'll have a hard time getting anyone to pay extra for a RV you are selling due to the extended warranty without those details. In any case it is a small fraction of the value of your RV so it likely won't make any difference.
Randy - Manhattan, Kansas
2015 Vista 27N
2020 Ford Escape Hybrid