hey guys!!!! its been awhile since I had a chance to post so its good to be back but its not in a good way though

Last night as I was pulling into my garage I always back it into so that way I can always get a quick escape! LoL!!!!! so anyways as I'm putting it into Reverse it may a noticeable click noise as it was going into gear. Then as I pushed the gas to back up it was making a pretty loud clicking almost like the hemi tick noise as I was backing up did it again this morning to make sure and it did it again so is this a cause to worry or should I seriously get the tranny fluid changed?....sounds like it is more than a routine fluid change

as always any help would be great dont really have the funds to take it into the stealorship right now and the truck has 99.8k on it

come on guys no one?.....any help?