2004 gmc sierra crew cab rain leak

[leftyfork]

Hello everyone. I searched the forums but don't see anything obvious out here. I have a driver's side rain leak, under the dash. I see the drip above the brake pedal area. It only happens when it rains. Not AC related etc. I would appreciate any help in general that others have experienced related to cab leaks in this area.

 

[leftyfork]

109 views with no response? Once I get the factory manual, and remove the dash, and fix the leak, I will post the fix. Rock on GM owners. It take a lot of patience. Rattling steering column and all!!!!

 

[Molson02536]

109 views with no response? Once I get the factory manual, and remove the dash, and fix the leak, I will post the fix. Rock on GM owners. It take a lot of patience. Rattling steering column and all!!!!

Have you tried running water from a garden hose across your windshield or by your vent at the bottom of the windshield. It could be a bad seal on your windshield or a clogged drain deflector that is pooling water across the bottom of your windshield and hood and flowing through your fresh air vent.

Regardless, good luck and keep us posted.

 

[simiseals]

water leak in cab

I am tracking down a leak in my 2004 GMC under the dash on the passenger side. It only leaks when it rains. I have been reading that several posing and it sound like the window seal is to blame. My next step is to run a hose to it and see if i can find the point of entry.