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Rain Leak In Cab

Rick98Z

By Rick98Z
in Ask A GM Technician

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Rick98Z Enthusiast

Rick98Z

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I have an 04' Chevy 2500LD crewcab 4x4. I had a rain leak in the drivers side front of the cab that has gotten worse. At first I thought it was coming down the pilar on the drivers side from maybe a windshield leak but now after ripping the dash even more apart it looks to be coming out of a rubber strip on a body seam, located to the far left behind the instrument cluster and vent line. Any thoughts? I don't want to have to go to the dealer for something so far back in the dash. Could it possibly be in from a leak in the cowl at the base of the windshield? I have heard that can be a problem area on our trucks from time to time. I have attached a picture to better show the actualy drip area...

DSCF4886.jpg

 

DSCF4885.jpg

Rick98Z Enthusiast

Rick98Z

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It actually isn't a rubber strip, it is plastic and it wraps up over the metal...not sure what the fix is???

1967 Enthusiast

1967

Posted
Posted

it is the seam at the top of the winshield post.pull out the black strip that goes up the winshield post on drivers side.look for seam where roof top overlaps post seal it with silicone.worked on my 04 2500hd to stop same leak.

Rick98Z Enthusiast

Rick98Z

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it is the seam at the top of the winshield post.pull out the black strip that goes up the winshield post on drivers side.look for seam where roof top overlaps post seal it with silicone.worked on my 04 2500hd to stop same leak.

 

Great I will give that a try!

cammiller Enthusiast

cammiller

Posted
Posted

I agree that it probably is the windshield seal. However, I would strongly recommend having the windshield professionally removed and installed as it plays a vital role in the structural integrity of the cab. If a portion of the seal is compromised, it should be properly repaired.

Oh and Awesome post. Pictures and all. Makes giving advice and help that much easier.

1967 Enthusiast

1967

Posted
Posted
It actually isn't a rubber strip, it is plastic and it wraps up over the metal...not sure what the fix is???
1967 Enthusiast

1967

Posted
Posted

it is not the rubber seal.it is the seam under the seal where the roof metal overlaps the winshield post metal .there is a gap in the metal seam that needs sealed up.

Rick98Z Enthusiast

Rick98Z

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Update: As per instructed I removed the black strip along the drivers side of the window. It has like 5 torx screws holding in on. Then I siliconed the area next to the top of the windshield where the roof seam overlaps the pillar seam. Checked it this morning in the rain and...dry floor! WOO HOO!!!! Thanks 1967 for your help and advice!

1967 Enthusiast

1967

Posted
Posted
Update: As per instructed I removed the black strip along the drivers side of the window. It has like 5 torx screws holding in on. Then I siliconed the area next to the top of the windshield where the roof seam overlaps the pillar seam. Checked it this morning in the rain and...dry floor! WOO HOO!!!! Thanks 1967 for your help and advice!
1967 Enthusiast

1967

Posted
Posted

when mine leaked all over the floor the dealer couldnt find the leak.found it my self no more wet floor.glad to help you out.

slimjim2525 Senior Enthusiast

slimjim2525

Posted
Posted

 

 

Update: As per instructed I removed the black strip along the drivers side of the window. It has like 5 torx screws holding in on. Then I siliconed the area next to the top of the windshield where the roof seam overlaps the pillar seam. Checked it this morning in the rain and...dry floor! WOO HOO!!!! Thanks 1967 for your help and advice!
Good job.

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