07 Nbs Gmc Roof Leak?

[TMMIguy]

A friend got in my reg. cab truck, went to buckle the seat belt and said the belt was wet. I took a closure look today. Pulled the passanger side rear pillar cover off, pulled out the carpet along the back of the cab, and pulled up the carpet on the floor(wet). Sure enough a puddle of water in the rear corner. There was water inside the pillar the seat belt tensioner bolts to also. Then I look up and notice the rear corner of the headliner is a little wet, and that some of the headliner is also a little water stained, so it must have been leaking for a while. I pulled the rear speaker and it had some water on it also. Now I'm thinking it must be leaking from the seam on top the truck for water to be up this high and this far in side the cab. I take a look at it and notice the the small weather strip/ molding that runs from the top rear of the door opening back to the rear glass is barely fastened down.(uses double sided tape) Anyway I think the water is coming from this area. Anyone hear of or have a problem like this? I'll be taking it in to the dealer in a day or two.

[MS3DALE]

This is the only bulletin I found on water leaks (that doesn't mention a sunroof) but its for crew-cabs.......

 

Document ID# 1868238

 

 

 

Subject: Headliner Leaks Water Or Is Wet - keywords back cargo center CHMSL crack lamp light roof screw stop #PIT4160 - (10/20/2006)

 

 

 

Models:

2007 Chevrolet Silverado

 

2007 GMC Sierra

 

 

 

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

 

Condition/Concern:

Some early built, prior to 10/1/06, Oshawa (1 in vin position # 11) 2007 LD Crew Cabs may experience water intrusion in the headliner area. This may be due to an over-torqued grommet in the Center High Mounted Stop Lamp (CHMSL).

 

Recommendation/Instructions:

To correct, loosen and re-tighten both screws that secure CHMSL to back of cab.

 

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.

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Document ID# 1868238

[cchupek]

I have had this problem already. Took the truck to the dealer and the third brake lamp was diagnosed as a bulletin issue. Lamp got replaced and no more leak......there anyway..... Several weeks ago, we had a lot of rain (3" in less than 8 hours) and I got in the truck and recieved a shower from around the sunroof. Back to dealer and found that there was debris in one of the drain tubes. No more problems, yet, knock on wood.