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2010 Silverado Crew - Noise From Rear Pass. Corner

kalashluvr

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TPine New Member

TPine

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New guy here but heres my .02. I bought a 2010 1500 LT Crewcab 1 month ago and really like the truck aside from the same wind noise in the back. I noticed the noise within 10 mins of leaving the dealership but thought the right-rear door just wasnt closed well enough. Several miles down the road I stopped and closed the door and headed out again. Same noise, nothing changed. I actually thought it was the door seal until I ran across this thread. What has been described here is exactly what I'm hearing. I picked up a regular thick yellow wash sponge at the parts store Sat and pushed the sponge from underneath the truck up between the cab and box so as to cover the right rear vent about 80% from the bottom. I have 1"-1.5" left uncovered at the top. I used a narrow oak strip sharpened on the end so I could suppress the sponge enough to move it upward without touching the louvers and once I got it in place I eased the stick back down and fine tuned the edges with the pointed end. Seems crude but it worked without messing anything up. Road test this morning was positive. I'd guess based on the one trip that 75% of the obvious noise is softened enough that it doesnt bother me near as bad. Its not gone by any means but it doesnt seem nowhere near as bad as before. Based on this test I'd say its without a doubt partially the vent where I'm getting the noise. The way the doors slam on these trucks I have to wonder whether there is simply just too much vent in the truck. Maybe the vents themselves arent too big (Maybe they are) but overall cabin pressure isnt quite right. I'm no engineer but I know somethings off in these trucks with so many folks having the same problem. I'm glad to have the TSB # as I'm calling the dealer tomorrow morning.

Stex Senior Enthusiast

Stex

Posted
Posted
they installed the new insulation blanket,you can still hear the road noise, drive it in rain ,,man you can really hear it

 

Did they do the entire repair:

 

 

The first part is basically replacing the grey insulation carpet on the back wall.

The second part looks to consist of extensive insulating using strip caulk, camper tape and rtv to seal numerous areas not deadened by the first step. One of the positions noted is the "open corner holes and seams/openings above the pressure relief vents".

kalashluvr Enthusiast

kalashluvr

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  • Author
Posted
they installed the new insulation blanket,you can still hear the road noise, drive it in rain ,,man you can really hear it

 

Did they do the entire repair:

 

 

The first part is basically replacing the grey insulation carpet on the back wall.

The second part looks to consist of extensive insulating using strip caulk, camper tape and rtv to seal numerous areas not deadened by the first step. One of the positions noted is the "open corner holes and seams/openings above the pressure relief vents".

 

 

So you are saying that there are openings above the cab vents on the back that have to be sealed?

Stex Senior Enthusiast

Stex

Posted
Posted
they installed the new insulation blanket,you can still hear the road noise, drive it in rain ,,man you can really hear it

 

Did they do the entire repair:

 

 

The first part is basically replacing the grey insulation carpet on the back wall.

The second part looks to consist of extensive insulating using strip caulk, camper tape and rtv to seal numerous areas not deadened by the first step. One of the positions noted is the "open corner holes and seams/openings above the pressure relief vents".

 

 

So you are saying that there are openings above the cab vents on the back that have to be sealed?

 

 

Read post #48-51...I guess there is more to it than the blanket per his post??

Stex Senior Enthusiast

Stex

Posted
Posted
they installed the new insulation blanket,you can still hear the road noise, drive it in rain ,,man you can really hear it

 

 

Steven, did they do the extra work as described in post # 51 on page 4?

 

"The first part is basically replacing the grey insulation carpet on the back wall.

The second part looks to consist of extensive insulating using strip caulk, camper tape and rtv to seal numerous areas not deadened by the first step. One of the positions noted is the "open corner holes and seams/openings above the pressure relief vents".

silverado990 Enthusiast

silverado990

Posted
Posted
they installed the new insulation blanket,you can still hear the road noise, drive it in rain ,,man you can really hear it

 

 

Steven, did they do the extra work as described in post # 51 on page 4?

 

"The first part is basically replacing the grey insulation carpet on the back wall.

The second part looks to consist of extensive insulating using strip caulk, camper tape and rtv to seal numerous areas not deadened by the first step. One of the positions noted is the "open corner holes and seams/openings above the pressure relief vents".

 

 

 

dont know ,does anyone have a website where we can download the repair sheets

Stex Senior Enthusiast

Stex

Posted
Posted

not sure if that extra work is in the TSB or if that dealer went above and beyond on the repair?? Maybe you can ask you dealer. I am talking to mine and they seem to stop at the extra sound blanket???

M1Tanker Enthusiast

M1Tanker

Posted
Posted

Took delivery of my 2010 crew cab Silverado yesterday and noticed the noise on the way home when I was looking for it. Today I heard it off and on...depended on whether or not I was listening for it or listening to the radio.

 

I will say it is a PITA when you listen to it but strangely enough, it was much worse when it was raining and wet out...not as bad today when it was dry and it also seemed to depend on how the side wind was hitting the truck.

 

I guess I am going to let it go through a trip this weekend and if it bugs me enough, I will call the dealer Monday...would almost prefer to wait until I either do not notice it anymore or they come up with a legitimate fix. Anyhow...debating whether or not to let the dealer know immediately since i just bought it or wait since it is a TSB and I didn't notice it on the test drive.

 

Other than that...this appears to be one really nice truck!!!

  • 2 weeks later...
M1Tanker Enthusiast

M1Tanker

Posted
Posted

I just read on another forum that there was an update to this TSB on the 23rd....anyone heard of this?

Freds_gmc Enthusiast

Freds_gmc

Posted
Posted

I bought a new Silverado LT Crew in June, and noticed the excessive noise as has everyone else on this thread. I just got back from the dealer who installed the TSB parts and performed the necessary work. The parts list an insulator for the back , topper tape, and sound deadener. It was in the shop for 5 hours and they applied sealer in the lower C pillar, replaced the rear panel insulator, and sound proofed the inner cab. In my opinion the repair worked, all I can hear now is normal road / tire hum, not the wind sound of an open window. :lol: . All on warranty, so if you have a new truck you may as well get it done for free, that's why we pay the big bucks.

  • 1 month later...
Stex Senior Enthusiast

Stex

Posted
Posted

Had mine in the shop last week for the TSB repair. The noise has a different sound now but it is worse/louder now??? Called my service mgr and told him I was just going to duct tape part of the damn vent to try and cut down the noise. He said bring it back and he will try something else? Will see how that goes.

 

Rich, was there and update to theis TSB in Sept. as mentioned above??

ChevyTech77 Senior Enthusiast

ChevyTech77

Posted
Posted

TSB # 10-08-58-001D was updated again on Nov. 4th to add an additional area of sound deadening material that is to be added.

 

This repair includes, and has always included, WAY more than just adding the insulation pad guys. If that is all that your dealer is doing, go have a talk with their service manager. If that doesn't help, call GM Customer Assistance.

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