Cadillac Repair: wind noise 2009 cadillac cts, cb antennas, market accessory

Question
I recently installed an aftermarket stainless window post trim package on my 09 cts.They are the type which attach with 3m adheasive.I've noticed a wind noise on the driver's side window towards the top near the post.I don't recall if it was there prior to the trim installation.But I'm fearful of any door adjustments being done on a brand new car.Is it possible I've caused this problem?And might I correct it by applying some silicone where the top edge of the trim meets the door line?Removing the trim would result in destroying them and also would expose the door frame to outward pressure,possibly creating a new air problem.Passenger side has no issues with same trim.Thank You for you're time.

Answer
Hello,

This noise is probably from the after market accessory. You need to realize that by installing these items even though it ehances the appearance, that detrimental things can happen. The vehicle was designed a certain way, but by this installation you have alterered it's dynamics.

You may not have the same problem on the passenger side because the driver's side piece may be a little different. You may not be able to notice that difference visually. 1/64 of an inch can make quite a bit of difference when rolling down the road at 50mph.

You may have a very small opening catching the wind and you may be able to seal it with clear silicone.

Remember when trucks had CB antennas mounted to the mirrors? Looked kind of cool, but in reality created a lot of noise. So much so that one could not hear the stereo at highway speeds with the window rolled down.

Today's cars are aerodymamically balanced to get the best fuel economy, have the least wind resistance and by installing these after market products there is commonly a price to pay. In your case, the car looks good, but has wind noise.

As I stated before, try to seal as best as possible. The problem though may be coming from the fact that the piece is setting past the door and any adjustments you make on the door may not be adequate. There is also a good chance that the dealer will not look at this as a warranty repair and could get costly to be fixed if it can be fixed with the after market pieces installed.


Good Luck!

Rob