**Resolved** Weird intermittent humming noise...
I have a weird hum that comes and goes while I'm at highway speeds. I can be driving down the freeway with the cruise on, and it'll all of the sudden appear. It sounds like there's a car with no muffler driving directly next to my driver's door. It changes pitch with speed, and as I slow down on an exit ramp, the frequency of the hum gets longer, almost like it's the brakes or something. However, tapping the brakes at freeway speeds doesn't help or make it worse.
First I was thinking tire balance, but I'm baffled since it's so intermittent and can get so loud! I noticed it the first time when I was towing two snowmobiles, and thought it was just hitch vibrations, now it's happening without towing anything. Have had an alignment done since it first started.
-SOLD- 2008 Outlook XE AWD<br />Carbon Flash/black cloth<br />Conv Pkg/Pref Pkg/Sunroof<br />Outdoor Adv Pkg/Tow Pkg