vibration in dash or windshield

OK here is the problem. I have a 2006 H2 and since I have owned it, I have not driven it very fast or far. Recently I started taking trips in it and traveling alot on I95 up and down the east coast. What I found is that every time I reach speeds at and above 70, I experience severe vibrations on both sides of the truck. It feels that the vibs. are under the top of the dash. It is definitely an air and wind caused problem. The vibs. are worse on windy days and during gusts of wind.. I drove from Delaware to Georgia and thought I was going to go crazy listening to these vibs. I originally thought it was air coming in from the side louvers but now I really don't know. Thought I would run it on this site before taking it to a dealer. Any help would be appriciated.

Mine does the same thing, sounds like the dash is rattling right?  From what I've heard that's just the case and can be solved with 3M double sided tape .. at least that's what one dealer did for another member .. I can't remember who on top of my head though ...

it's air getting between the windshield and the reveal moldings(windshield side moldings), easy fix. open the front doors, pull the front of the weather strip back from the reveal molding, there are 2 screws you remove and the reveal molding will pull off. clean the molding and the windshield and put some new double sided tape on the molding and reinstall.

Zyne, it does sound like the air is rattling something just under the surface of the dash.
I will try the tape on the moldings and see what happens. Thanks for the info. alpha4wd

Yep, that's what it was .. thanks for pickin' up the slack where my crappy azz memory left off Alpha :-)

Ahhh..... that's what that is??  I only notice mine above 85-90..... I was thinking it was in the clearance lights.... or the roof rail....

I never hear anything as METALLICA is ALWAYS CRANKED!!

Yep, that's what it is. I was the one who had the dealer do the 'fix' for my '06 H2. After they added the 3M automotive adhesive tape to the underside of the windshield side trim, the noise never resurfaced. Your dealer should already be aware of the problem as it's somewhat inherent to many of the H2s...good luck.

I had the same problem and I solved it using some sort of glass adhesive stripping. It was basically a roll of the black sticky stuff that is used to seal/stick the windshield on. I think that you could even get the same results with some bath tub caulking. Easy fix that makes a big difference.

Calgary

quote:

ORIGINAL: HummBob

I never hear anything as METALLICA is ALWAYS CRANKED!!

 
Hahahah... Same here... except it's Godsmack or Zombie..hahhaha.... must have total crankage..hahahha

quote:

ORIGINAL: Hummergirl4

quote:

ORIGINAL: HummBob

I never hear anything as METALLICA is ALWAYS CRANKED!!

Hahahah... Same here... except it's Godsmack or Zombie..hahhaha.... must have total crankage..hahahha

 
 I'm OLD SCHOOL!!!

When I told my service advisor at my local Hummer dealer about my roof vibration niose at high speeds on my H2 , he immediately said it was the widshield piller posts, he had an outside glass company that they use come to the dealer and seal the sides of the windshield under the trim Hopefully end of problem, he was confident that the problem was solved. I need to get it on the freeway on a windy day to make sure.
 Gary

quote:

ORIGINAL: crazytodig4u

When I told my service advisor at my local Hummer dealer about my roof vibration niose at high speeds on my H2 , he immediately said it was the widshield piller posts, he had an outside glass company that they use come to the dealer and seal the sides of the windshield under the trim Hopefully end of problem, he was confident that the problem was solved. I need to get it on the freeway on a windy day to make sure.
 Gary

 
Good Luck Gary, Let us know how it works out!!!

Welp, we finally experienced the same noise today while going to Paige's parents lake house. I was driving about 70-75 and the rattle was driving us crazy. I need to do as you guys say and fix it. The wind was pretty strong so that must be a huge factor.
 
Funny thing, on the way home I was driving the same speed with no rattle at all. I think it all depends on how bad the wind is outside.

Went to the dealership yesterday afternoon and got them windshield rattle fix. We have 38K miles and they still fixed it. Also fixed some PI that had to do with a popping noise in the front end. Didn't charge us a penny.
 
This is a good dealership. It is Carl Black Hummer in Roswell, GA.

that's common on H2s, and its related to those fake air intake bumps on the left and right sides of the hood area near the window.
 
i corrected the rattle on my truck this way:
 
1.  remove each bump (they pop out, and are held by 4 typical GM pins, which are great as they snap back in).  The fake intake bumps have positioning pegs near the snaps, which tend to break off.  This hasn't caused much trouble fo rme.
 
2.  dynamat the entire inside of the intake bumps, and all of the area under the intake bumps
 
3.  replace the bumps
 
 
That did the trick for me, AFTER i also tracked down a vibration (and treated with 3m tape) in the dash piece under those bumps that spans the whole front of the truck right in front of the windshield.
 
I took some pics of the problem areas and the fix, and i'll try to remember to post them.
 
But
 
A)  focus on the area around the intake bumps
B)  space with foam tape and/or Dyanmat all possible offending pieces
 
 
Its real easy.
 
 
This is a case of the styling of the H2 kicking us in the rear.  The horrid aerodynamics (a result of the styling) cause alot of turbulence.  But its easy to fix, and the big truck remains as cool as it'll always be.  ;)

Just did the full meal dral to mine, no more noise. I thought it was the wind deflector for the sunroof making the noise.
Nice and quiet, or as quite as a brick can be