A GMAC lease return is when the lease you have on your vehicle is up. When the lease is the lease holder has three options: 1. The lease holder can return the vehicle to the dealership. 2. The lease holder can purchase the vehicle from the company. 3. The lease holder can trade the vehicle in and start a new lease. For more information on this i have found that the best information on this is:
. http://www.swapalease.com/lease/gmac-leasing.asp