Chevy Pickup / Work Truck

I have had this truck several years. It has an extra set of wheels and 4 mounted on it that have 12 thousand miles on them....they will last a long time. Engine starts up every time and it runs and drives good. It also passed inspection last July. Currently the transmission slips after driving then poops out completely. After it sits...it runs again, same scenario. I bought a newer truck. Text or Call the contact number...leave a message if no one answers. E-mail queries/offers thru C’list is also acceptable. Tow it out of here for $1000 CASH....or your best offer.