three problems.... any sugesstions??

[DCtitan]

i have two problems right now with the titan the first is that when I get the radio volume up pretty high like (between 16-20). I hear a slight tapping/knocking noise towards the windshield but once goes below volume sixteen it fades away. what is up with that maybe something in that front speaker????

problem number two On the back bumper the plastic right under most peoples rear license plate. Mine is loose on my truck there seems to be some sort of adhesive holding it on. and when I put pressure on it the plastic sinks and sounds like the adhesive is being ripped or torn away. The same sound as if you were slowly ripping duct tape off of something.

problem number three i was washing the titant this weekend and I noticed that on the lower crhome peice (right under the nissan emblem) there is like an area between the upper grill and the lower chrome. where it looks like pollen has sat but water and everything else wont get rid of it I dont know maybe it is just unpolished???


I still love the titan but just wondering how to fix some these probs thanks for you help and suggestions doug