Stan
Full Member
Like some, we've been fighting bed leaks and the darn "wind flapping" noise on the passenger side radiating from the dash up to the top of the A pillar on LTZ's with sun roofs. After talking with a past GM technician in which over and above electrical was the go to guy for squeaks & rattles he gave me advice on finding the source of the rattle starting point vs the end of where you hear it. Yes, I've done all I read here on hoses, hvac issues, inner fender well rattles, etc. Did it all..........
To get to the point, here is what i did.
*I noticed the under hood insulation mat was loose and not secured on the edges and looked "floppy". I ensured all retaining tabs were secured and then sealed the edges of the mat to the hood. You'll have to do a little cleaning on both to get a good seal and then check on it now and then. I used gorilla tape.
* I then found the tranny dip stick was in a position in which based on head wind or cross wind scenarios it had the possibility of tapping against the firewall. I re-positioned the top fastener to keep it from that area and will lightly tie wrap it out of the way.
* Then I moved the front horizontal luggage rack one notch back further away from the sunroof.
So far folks it has not rattled in a head wind, cross wind, etc. It may help or not if you have the issue. All it's going to cost you is about 10 minutes and a few feet of gorilla tape.
Thanks all !
To get to the point, here is what i did.
*I noticed the under hood insulation mat was loose and not secured on the edges and looked "floppy". I ensured all retaining tabs were secured and then sealed the edges of the mat to the hood. You'll have to do a little cleaning on both to get a good seal and then check on it now and then. I used gorilla tape.
* I then found the tranny dip stick was in a position in which based on head wind or cross wind scenarios it had the possibility of tapping against the firewall. I re-positioned the top fastener to keep it from that area and will lightly tie wrap it out of the way.
* Then I moved the front horizontal luggage rack one notch back further away from the sunroof.
So far folks it has not rattled in a head wind, cross wind, etc. It may help or not if you have the issue. All it's going to cost you is about 10 minutes and a few feet of gorilla tape.
Thanks all !