You have helped me greatly! Thank you! 09 avalanche has been doing this for a while now,and it's been driving me crazy. Hoping this does the trick.

Right on man! Re sealing my bed panels tomorrow and will probably do this while I'm at it! I've had random wetness in my front carpets recently so this may be the problem!

I appreciate you for explaining how & why it was getting in.

it can also be sunroof channels too they get clogged and cause water in the floor

Good lookin brotha! I'm having the same issue with my 05 Avalanche. I'm in the Bay Area and its been raining every day for the last couple of weeks and the same thing has been happening to me. Hopefully your technique gets the job done. Peace and blessings to you and your family.

I'm getting water in back where my amps and subwoofers are. Gotta check it all out, may need to do some silicone as well. Preciate the upload. 🏾

My 2004 leak is under door panel passenger side. it even blew off my sunroof relay on passenger corner panel. I'm guessing is weather striping. I will also check the issues you talked about ! TY.

Same truck, same problem. Thanks for posting.

Thank you so much for this. I have had so much issues with this and just dealt with it.

Thank you for taking the time to post this!!

Thank you I'm having this same problem

Very good investigation

I’m getting almost a half of a gallon water in my front and passenger side rug I’m going to have to give that a try