Sounds to me like the fan motor is not running? Might be a "mud dauber" nest preventing the fan from rotating, or maybe a failed run capacitor. Good luck with the problem!
I installed a Demco baseplae on an 05 Liberty 10 years ago. Avery straight forward project that took about half a day start to finish. I think there were a couple holes to drill and a couple of trick fasteners that were supplied. I think that the g...