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High pitch noise- coming from windshield?

dougs z71

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dougs z71 Enthusiast

dougs z71

Posted
Posted

When I drive over 65 on windy days I hear a very high pitch loud noise that sounds like its coming from the windshield (not exactly sure though - the pitch is very high and hard to tell where its coming from). The noise can best be described as the ringing noise you hear after a loud concert.   I removed the bug deflector and it did not help.  I have put tape on the sides and top the the windshield to see if it would stop and it did not.  I'm wondering if my billet grill or Brush guard is causing this annoying noise.  I have taken it to the dealer and after a test drive he said that if I wanted they could remove my wind shield and reinstall it.  But I'm not exactly sure if it would fix it.  I would hate to have the dealer do that and it would not work b/c   I'm concerned if he reinstalled the windshield if the quality would be worse than the factory install.  Can anyone tell me what they would do in my situation?   I was thinking of putting some silicon on the bottom of windshield under the molding since I know its not coming from the top or sides.  Its is worse on windier days and at higher speeds

I have also removed the fuse from my radio to make sure its not an electrical noise or the ringing in my ears after listening to my subwoofer :)

 

thanks for any ideas you have.

The Beav Enthusiast

The Beav

Posted
Posted

Make sure your doors are closed TIGHTLY.  I had the same problem last summer.  The screaming noise seemed like it was coming from the passenger side of the windshield whenever I'd get above 60 mph.  I, too, thought it was in deed the windshield, but it turned out that the rear door wasn't closed tightly enough, thus not creating a good seal, and subsequently squealing at the pressure differences at higher speeds/temperatures.  Good luck.

  • 1 month later...
2000 GMC Enthusiast

2000 GMC

Posted
Posted

I get a noise coming from my extended cab's rear windows.  Any way of adjusting them to make a tighter seal?

Shaners Senior Enthusiast

Shaners

Posted
Posted
I get a noise coming from my extended cab's rear windows.  Any way of adjusting them to make a tighter seal?

There was a TSB to replace the rear windows on the excabs.  I had them replaced on my '00...

 

If you are still under warranty, you should check with your dealer.

 

As far as the wind noise you are hearing Doug, I'd check to make sure everything is good and tight around the side mirrors.  Sometimes a gap in the plastic (anywhere on the front of the truck) will cause a "whistle" or noise at certain speeds.  About the only way you can find it is by taping up certain parts of your truck and then driving it.  When the whistle stops blowing then you know you've isolated the area.

 

A freind of mine had a Buick SkyHawk that would make noise at 50 mph.  It was finally isolated to the chrome headlight bezel.  Appearently the gap was just the right size that when air passed over it at a certain speed it began to vibrate or whistle.

  • 2 weeks later...
dougs z71 Enthusiast

dougs z71

Posted
  • Author
Posted

To all,

    Thanks for your replies.  I've used all everyone's ideas and I'm still fighting the noise.  I'm going to try taping the doors closed (only one at a time though :)) and see if its coming from one of the the doors.  I'm also going fold  the outside mirrors in and see if it helps.  If nothing helps I'm going to temporally remove the billet grill and brush guard.

Sierra Sam, thanks for the suggestion, I don't have a billet antenna but I'm going to temporarily remove the stock antenna and  see if it helps.

The dealer can't find it , I'll also try another dealer if I can't fix it on my own.  Thanks again

DaytonCobra New Member

DaytonCobra

Posted
Posted

I have a 2002 Siverado 1500, reg. cab, long bed. I also get the same loud and extremely irritating sound. My truck is 100% stock. It sounds like it comes from the base of the windshield on the passenger side. Any ideas how to fix this?

 

Rich

rrsob Enthusiast

rrsob

Posted
Posted

I'v heard of the winshield problem before. I also believe the dealers are aware of this. I'v heard some dealers take off the windshield moulding and put tape under it. I'm guessing some kind of foam tape.?.

Also on my '99, I heard a whistle and after trying to figure it out awhile I tried folding my mirrors in. It seemed to stop. But I have'nt tried it at a few different speeds to be sure this is the problem. Just another thing you may want to try.

Also I have a question. The extended cab rear side windows seem to be a common problem. Last week I called the dealer and told them my passenger side rear window was'nt closing. They ordered a window kit. Now I suspect the drivers side and I'm thinking of asking them to order another kit. Should the clamps make an audible "click" or "snap" when they close ?

My do not, and it seems they should.      thanks, Rich S

obyone Enthusiast

obyone

Posted
Posted

Quarter Glass - Wind Noise

 

File In Section: 08 - Body and Accessories

 

Bulletin No.: 99-08-48-001A

 

Date: September, 2000

 

Subject:

Wind Noise from Body Side Quarter Window (Replace Body Side Quarter Window Assembly)

 

Models:

1999-2000 Chevrolet and GMC C/K Extended Cab Pickup Models (Silverado and Sierra) Built Prior to February 1, 2000

 

This bulletin is being revised to add the 2000 model year, remove service procedures, and change the part numbers. Please discard Corporate Bulletin Number 99-08-48-01 (Section 08 - Body and Accessories).

 

Condition

 

Some customers may comment on wind noise coming from either of the body side quarter windows while driving with the quarter windows closed. The wind noise may be more noticeable at speeds over 56 km/h (35 mph).

 

Cause

 

An insufficient seal of the window frame to the body or an improper window latch length may cause this condition.

 

Correction

 

A new body side quarter window kit is available to correct this condition. This window kit includes the window frame and glass, three frame centering screws that reinforce the sealing of the window frame to the body, and an instruction sheet. The window frame also features a reinforcement latch tab to improve latch efforts and function.

 

Replace the applicable body side quarter window on affected vehicles. Use the appropriate part number listed below.

 

Refer to the applicable Service Manual for quarter window removal and additional installation procedures. Also refer to the instruction sheet provided with the window kit for installation information.

 

Parts Information

 

Parts are expected to be available from GMSPO on 9-18-00.

 

 

Sorry parts number for replacement windows wont post. Email me if you need them

rrsob Enthusiast

rrsob

Posted
Posted

Thanks for the TSB info. I'm glad I still have 3 months left on the factory warranty. :)  I'm not sure my extended warranty would cover it. Just the same it's nice to let the dealer deal with it.   Rich S

  • 10 months later...
Uplink New Member

Uplink

Posted
Posted

???

Has anyone found a soulution to this? I have a 2002 Suburban with the EXACT same problem and its driving me nuts!  Whistling/wind noise when I hit 70mph, especially when its windy outside,  I can hear it behind the dash, near the windshield.    I have put duct tape everywhere around the front and sides of the truck and cant find it.  Dealer has reseated the winshield 3 times and they still havent fixed it.  I think it must be something else, thanks, PLEASE HELP! THANKS! Mark  ???

mad dog 70 New Member

mad dog 70

Posted
Posted

I have taken it to the dealer and after a test drive he said that if I wanted they could remove my wind shield and reinstall it.  But I'm not exactly sure if it would fix it.  I would hate to have the dealer do that and it would not work b/c   I'm concerned if he reinstalled the windshield if the quality would be worse than the factory install.  

Just remember, no matter the quality and professionalism of whoever you have replace your windshield, it is NEVER as good as the original factory install.  It may come close depending on how good the shop is, but I've yet to find one that fits exactly the right way...I wouldn't replace unless you are 100% positive that it is the windshield...just my $0.02.

Charlie in TX Enthusiast

Charlie in TX

Posted
Posted

Uplink, I had a similar noise on my '99 ecab. It sounds like it comes from the dash. Mine went away when it was raining. On my '99 here is a plastic trim on the bottom of the windshield. It is not attached on the top part. I put a matchbook under it and it stopped. Glued it down with clear RTV.

 

How it works for you.

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