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07 Nbs Sunroof Leaking Extended Cab

07Sierra07

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07Sierra07 Enthusiast

07Sierra07

Posted
Posted

First rain with my 07NBS and I my roof is leaking.

It's going back on Monday for a 'leak' test.

 

I'll let you know the results.

 

Anyone else with similar issues on the GMT 900?

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
First rain with my 07NBS and I my roof is leaking.

It's going back on Monday for a 'leak' test.

 

I'll let you know the results.

 

Anyone else with similar issues on the GMT 900?

 

Heres a bulletin on this,Maybe this is your problem.....

 

Document ID# 1871867

2007 Chevrolet Silverado - 4WD

 

 

--------------------------------------------------------------------------------

 

 

Subject: Water Leak From Sunroof - keywords carpet cowl driver floor hose left roof seat #PIT4178 - (11/09/2006)

 

 

 

Models:

2007 Chevrolet Silverado

 

2007 GMC Sierra

 

With RPO CF5

 

 

 

 

--------------------------------------------------------------------------------

 

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

 

Condition/Concern:

Some owners may comment of a water leak from the drivers side of the sunroof assembly. This concern could be caused by a blockage of the drivers side sunroof drain hose in the cowl. In some cases, the drain hose may be too long and the end of the hose is bottomed out against the body sealer.

 

Recommendation/Instructions:

To correct this concern remove the cowl screen and wiper assembly to shorten the hose. This will provide additional clearance between the end of the drain hose and the body sealer.

 

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

 

 

 

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

 

 

© Copyright General Motors Corporation. All Rights Reserved.

 

 

--------------------------------------------------------------------------------

Document ID# 1871867

2007 Chevrolet Silverado - 4WD

  • 9 months later...
SierraLeone Enthusiast

SierraLeone

Posted
Posted
First rain with my 07NBS and I my roof is leaking.

It's going back on Monday for a 'leak' test.

 

I'll let you know the results.

 

Anyone else with similar issues on the GMT 900?

 

My truck has been through a lot of rain since I bought it last July. I went out this afternoon after it had been raining for a few hours and on my way home I took a sharp left turn and water poured out of the dome lights! About a cup or so drizzled out and the only place it could have come from is the sunroof. Water may have been in there before, but only a sharp turn would cause it to pour out. The roof was closed, so this has to be a problemo. To the dealer in the next few days.

LF Motorsports Enthusiast

LF Motorsports

Posted
Posted

Guess I need to check out my dome light!!! We had a toad strangler yesterday and no issues that I know of. I will check now.

 

Not sure about making the hard left/right turns but sounds fun. :D .

 

thanks for the heads up guys.

Zembonez Senior Enthusiast

Zembonez

Posted
Posted

This is why I don't buy sunroof vehicles anymore. Everytime I did, I managed to develop a leak in it while I owned the vehicle. Too bad... they are a cool item.

  • 3 weeks later...
07Sierra07 Enthusiast

07Sierra07

Posted
  • Author
Posted

My problem was that their are drip tubes that run water from the sunroof down through the cab corners and out.. one of these was missing........

pm26 Senior Enthusiast

pm26

Posted
Posted
This is why I don't buy sunroof vehicles anymore. Everytime I did, I managed to develop a leak in it while I owned the vehicle. Too bad... they are a cool item.

 

That's not necessarily common on other makes/models. I have had factory sunroof equipped vehicles for years and no water leaks ever. 1992 Mazda Protege LX 7 years, 125k miles, 1999 Mazda 626 ES V6, 9 years, 186k miles, 1995 Nissan V6 4x4 SE pickup, 10 years, 90k miles, 1983 Mercedes 300SD, 5 years, my brother's 1998 Nissan Maxima sunroof does not leak etiher. And the drain tubes on any of them NEVER required cleaning.

 

However, Volkswagen seems to have very serious sunroof leak issues on many of their vehicles. Mostly due to constantly clogging sunroof drain tubes.

  • 1 month later...
rescuediver66 New Member

rescuediver66

Posted
Posted

I bought a new 2007 Silverado crewcab 7 months ago that came with a factory sunroof. Recently I noticed when I go through the local laser carwash there is a light spray of water entering the rear driver side corner of the sunroof. I've also noticed it when there is a heavy downpour. I've noticed a lot of water in the rear driver side corner of the channel but no water anywhere else. It is kept under a carport and I only have 4000 miles on it so the drain channels shouldn't be clogged. I took it to the dealership I bought it from and they "repositioned the drain line". The body shop manager told me for future reference the sunroof may leak when I go through a high pressure carwash or if there is a heavy downpour. Is this right? I find that hard to believe. I can't imagine the sunroofs not being designed to keep water out better than this. I've done some reading and noticed it is normal to be able to reach up inside the truck and feel water in the channels but the only place I ever feel any water at all is in the back driver side corner of the sunroof channel. I just got it back so I'll repost in a few days with an update. Any ideas/suggestions would be appreciated. Thanks!

  • 1 year later...
CPT Furious Enthusiast

CPT Furious

Posted
Posted

I know this thread is a little old, but I just had my sunroof leak on my 2003 Suburban while my wife was driving. This was after a "toad strangler" blew through a little while ago. My wife said it came out of our DVD player hole, dome lights, and driver visor. She also said it mostly happened after stopping and that it "gushed" out. I checked the sunroof when it was open and noticed that it had the drain holes in the front left and right of the panel, but is there anything else I can do besides blowing air through the holes?

 

You could see where the water had built up and I think it just had too much build up to let it through the drain tubes and it overflowed. Would a new seal around the sunroof help at all?

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