Ok the dash noise front left windshield area
#1
02-25-2017, 11:03 PM
Ok the dash noise front left windshield area
Is killing me!! I have a 2007 H2 with 100k on it. It sounds like the dash rubbing or something rubbing when I get above 50mph. Like it is right in the corner between the speaker and the winshield.. What the heck is it and hiw do I fix it!!!! It is driving me nuts!!!
#3
02-28-2017, 10:40 AM
My 2003 had an annoying rattle in the same area. I had the dash out once to install a Nav system. Drove around without the dash and still had the rattle, could never find it. I know it's not much help to you but I fixed it by trading it off for my 2006 LOL
#4
02-28-2017, 12:55 PM
Are you able to get a recording of it? Is it a squeek or a flapping sound? I've resolved both issues from a incompetent windshield replacement:
1) Flapping sound often come from the window moldings: https://www.hummerforums.com/forum/h...driving-37804/
2) High pitch squeek comes from the cowl panel (GM 19256401) which is not properly fastened to the car body. In my case the two aft clips nearest to the windshield were broken and rubbing on the car chassis along with the cowl support for one of the clips (I had to plastic weld this back together). I further since replaced those clips and even added foam cushions under them to help prevent it from happening again (though, I will probably go back and use 1/16" rubber packing sheet instead of the foam as foam will eventually break down)
1) Flapping sound often come from the window moldings: https://www.hummerforums.com/forum/h...driving-37804/
2) High pitch squeek comes from the cowl panel (GM 19256401) which is not properly fastened to the car body. In my case the two aft clips nearest to the windshield were broken and rubbing on the car chassis along with the cowl support for one of the clips (I had to plastic weld this back together). I further since replaced those clips and even added foam cushions under them to help prevent it from happening again (though, I will probably go back and use 1/16" rubber packing sheet instead of the foam as foam will eventually break down)
Last edited by clsimmon; 05-04-2017 at 03:00 PM.
#5
02-28-2017, 01:26 PM
The left and right corner front windscreen mouldings tend to warp-away from the glass over time. They can be removed and inspected but exactly how they can be modified to stop them singing at speed I'm not too sure, I just wedged some rubber trim on mine.
#7
03-01-2017, 03:36 AM
Yes indeed these are the culprits.
One thing, I have done exactly what was advocated however mine still rattled. Experimentation whilst driving (with the aid of a passenger) showed that the vibration is caused by air being forced between the long thin gap between the screen and the moulding which makes it act like a "reed"
To prove the point we took a strip of card and wedged it in the gap and hey presto the noise immediately disappeared.
Either the gap needs to be eliminated, wider or filled. Mine is still has the problem so I'm going to try bonding a thin rubber strip along the edge so that it traps itself between the screen and the moulding. Thats almost the same as the article shows but instead running the 3M tape right up to the edge.
One thing, I have done exactly what was advocated however mine still rattled. Experimentation whilst driving (with the aid of a passenger) showed that the vibration is caused by air being forced between the long thin gap between the screen and the moulding which makes it act like a "reed"
To prove the point we took a strip of card and wedged it in the gap and hey presto the noise immediately disappeared.
Either the gap needs to be eliminated, wider or filled. Mine is still has the problem so I'm going to try bonding a thin rubber strip along the edge so that it traps itself between the screen and the moulding. Thats almost the same as the article shows but instead running the 3M tape right up to the edge.
#9
03-01-2017, 08:36 AM
Yes indeed these are the culprits.
One thing, I have done exactly what was advocated however mine still rattled. Experimentation whilst driving (with the aid of a passenger) showed that the vibration is caused by air being forced between the long thin gap between the screen and the moulding which makes it act like a "reed"
To prove the point we took a strip of card and wedged it in the gap and hey presto the noise immediately disappeared.
Either the gap needs to be eliminated, wider or filled. Mine is still has the problem so I'm going to try bonding a thin rubber strip along the edge so that it traps itself between the screen and the moulding. Thats almost the same as the article shows but instead running the 3M tape right up to the edge.
One thing, I have done exactly what was advocated however mine still rattled. Experimentation whilst driving (with the aid of a passenger) showed that the vibration is caused by air being forced between the long thin gap between the screen and the moulding which makes it act like a "reed"
To prove the point we took a strip of card and wedged it in the gap and hey presto the noise immediately disappeared.
Either the gap needs to be eliminated, wider or filled. Mine is still has the problem so I'm going to try bonding a thin rubber strip along the edge so that it traps itself between the screen and the moulding. Thats almost the same as the article shows but instead running the 3M tape right up to the edge.
If the molding itself has become deformed, then I would just go ahead and replace those. The thread has the part numbers, and as of now, they can still be bought from the parts houses.
#10
03-01-2017, 12:43 PM
^ exactly. I personally wouldn't do silicone or anything that is going to glue the trim to the windshield in case you need to remove them in the future. I just added 3M foam and it solved the issue for over 4 years now.
