thanks to the site creators/maintainers for letting me join. A quick hello to all and a question for Allison man. Before my question I wanted to say that I like the layout of the site and think it is great to have someone to talk with that also RVs with questions or just to share info with. I have a 2002 Carriage 5th wheel 36 footer with 3 slides. I pull it with a 2002 GMC Duramax w/ an allison. The pair have done great until today when I decided to drive the truck (after it had been sitting about a month) and it won't move in reverse and has a blinking R light and a check engine light. It will move in drive but it feels like the parking brake is still engaged, but the parking brake is released. Any ideas of what is wrong or what I can do before taking it to a mechanic and would it be O.K. to drive it in this condition? Thanks in advance for your help!