2007 LT3 Gray
It seems my sunroof likes to whistle from time to time. Can't seem to locate exact location while I drive. Must be a seal issue but unsure. Anyone run into this annoyance?
Thanks

 

I had this problem on two different cars it turned out to be the rubber drain tubes from the moonroof that were routed thru the front pillar anddrained into the frontwindshield/wiper area werepicking up outside air pressure while driving thus causing a whistle/low pitch sound in the tubes. I did a sight reroute bending of the tubesand the noise disappeared.
This may or may not be your problem but something to look into.
r178

 

I have 06 HD2500 pickup and the sunroof would whistle. With the sunroof closed looking on the out side the sunroof should be flush all the wayaround. If not there are 3 torks adjusting screws on each side on the inside of the sunroof. It will take you a few times to adjust and take for aspin. Need to drive about 40 mph. It took me about 7 times to get it right. Hope this helps. Good luck.

 

I have done this with car doors, maybe it will work on the sunroof.

You can take a dollar bill and close it in the sunroof. Wiggle it back and forth. The wetherstrip should have a good hold on it when you do this. Go around the sunroof and where you feel the tension on the dollar bill loosen up is most likely your trouble area. The seal is not as good there.

 

nevermind, I looked. It ain't gonna work with the sunroof.