2008 Suburban wind noise rear door/window

[donh]

I have an issue with my 2008 Suburban that I hope someone on the forum with a 2007 or 2008 GM Tahoe/Suburban may be able to help me with. I hooked up my Airstrem trailer for the first time with the new Suburban and headed out for a short trip over the labor day weekend. Everything was fine, except with the trailer is in tow there is a strange noise coming from the rear door/window. A squeaking sound mixed with I think wind noise. It starts at around 45mph. It comes and goes. There is no noise when the trailer is not in tow. I discovered on if I pull in close behind an 18 wheeler that the noise stops. But when I pull over to the other lane it starts again. So I suspect that the turbulence between the rear of the Suburban and the trailer causes the rear window to buffet somewhat causing the noise. When I am behind the 18 wheeler I am not getting the direct airflow so it stops I guess. The door seems tight but since the rear window is a solid piece of glass that closes on a rubber gasket there is a chance that wind could get up under the glass. I can push on the left side of the glass and get movement. The right side is pretty tight. The only other thing back there is the rear wiper. When not in use it sits on a support and is loose and could rattle around.

Has anyone with a 2007 or 2008 GM or Tahoe Suburban experienced this. Again there is no noise except when I am pulling the trailer.

Thanks

Don

 

[donh]

Liftglass

I have an issue with my 2008 strange noise coming from the rear door/window. A squeaking sound mixed with I think wind noise. It starts at around 45mph. It comes and goes.
Don

I found out that the proper term from GM is "Liftglass". But I did not find anything else on this subject, yet.

By opening the "Liftdoor" and crawling in the back I can see that the liftglass when closed is not as tight on the gasket on the drivers side at the bottom as it is on the passenger side. You can actually push easy on the corner and see light. This does not happen on the other side. So the turbulence while towing must be effecting this. I don't see anyway to adjust this but I am sure there is. I guess its back to the dealer.

Don

 

[rgncjn]

Liftglass Squeaking

I have had the same issue when pulling my trailer. It is an aerosport v-nose trailer. I have used the trailer twice and when on the highway I will hear it. It is not constant and I guess comes with wind gust from a particular direction. Has anyone figured out a fix??

 

[donh]

Windnoise from Rear of Vehicle/Liftgate Glass

Here what I was able to find out on my Airstream forum. GM bulletin entitled "Windnoise from Rear of Vehicle/Liftgate Glass." It is Technical Service Bulletin #06-08-66-012C and was issued on July 31, 2007. It states the following condition: "Some customers may comment on excessive windnoise coming from the rear of the vehicle, expecially when trailering."

The correction as noted in the bulletin is to (1) replace seal, (2) replace stop bumpers and (3) replace rear glass. A liftgate latch adjustment may also be necessary.

I have not had a chance to take my Suburban in to a dealer yet, but others have. When the dealer looks up the service bulletin they have proceeded to fix the problem I am told. Let me know how you come out on this. Hope it helps.

Don

 

[metro273]

If the vehicle is still under warranty, let the dealership deal with it...
Good thing there is a tsb for this complaint.

 

[cccoltsicehockey]

I also have this problem when when towing my 24ft carmate trailer with my suburban. It is extremely annoying especially when heading to car show that are 4-7 hours away. for the time being I always take painters tape and tape the entire way around the liftglass. This has stopped the problem. Good to know that there is a fix the dealer will provide for the vehicle. Will have to get this done next time its in for service.