Hey Randy,
May i mention Courtesy Isuzu on South Broadway (Way SOUTH!). Thay are the best Isuzu dealer i have dealt with. Denver Isuzu are crooks and Tynan's Isuzu is ok but but not really up to par. Everytime i have had warranty work done i have never been asked about ownership and such. I bet they would honor the original warranty no questions asked. It's worth a try.