Originally Posted by sunsen
Thank you for your great help. Have a 2015 37rb and had the whistle noise. New door gaskets didn't help. Plugged the hole in the top of mirror mount with 9/16 plastic plugged. Problem solved. Also have the clicking noise out of both front wheels. Will take your advise once again. If it is the steel cover causing the noise I can live with that. Thanks for your help. Small things can drive me crazy. I noticed when I removed the steel cover not all lug nut holes were covered with rubber. Wonder if this makes a difference?
Can you go into more depth about the hole you plugged. I have a 2915 37ts and the only holes I see are just the counter sunk holes on the mounting bracket for the upper mirror frame. There are 4 holes, they have bolts/screws in them, It does not seem like there is anything to fill on drivers side.