Thread: Rain leaking into trunk on 2008 Grand Prix base

Results 1 to 5 of 5
  1. #1 Rain leaking into trunk on 2008 Grand Prix base 
    SE Level Member
    Join Date
    Jun 2016
    Location
    Florida
    Posts
    8
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I just bought this car and I'm hoping someone has some insights into this issue. The rear window weather strip that is supposed to meet the rear of the trunk lid is leaking. On the left side (facing the rear of the car), it is almost angled 90 degrees down. I don't even know how it's possible that it could have ended up that way. There is a gap between the window and the trunk lid and you can see the channel beneath. In the middle and on the right side, the seal is more normal/flat, but it still angled down 1/4 inch or so and does not meet the trunk lid. It would leak anything running off the back window into the trunk lid channel that drains around the sides and down past the taillights? The weird thing is it's not leaking into the trunk on the left side. Rather, it's on the right side where the inside lid liner is getting soaked and then dripping into the trunk.

    I tried calling the GMC dealer to get an estimate and they said if it's the seal along the bottom of the back window that is supposed to meet the trunk lid, the rear window glass has to be pulled by a "glass company" since the seal sits beneath the back window. Anyone have any experience with this? It sounds like a much bigger deal (PITA) than just replacing a simple piece of weather strip.

    Thanks for any help...
    Reply With Quote  
     

  2. #2 Re: Rain leaking into trunk on 2008 Grand Prix base 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    if the window leaks it needs to come out, then be re installed.

    or you can get some black caulk and put a small bead of (id use a polyurethane caulk) around the edge glass to body, wet your finger and smooth it out.

    wipe your finger off, re wet it before each smoothing of the caulking. caulk dont stick to wet things, why this works so well.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  3. #3 Re: Rain leaking into trunk on 2008 Grand Prix base 
    SE Level Member
    Join Date
    Jun 2016
    Location
    Florida
    Posts
    8
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Thanks for the advice. The rear windshield seal isn't leaking though. The flap that protrudes from the rear windshield seal that is supposed to cover the gap between the rear windshield and the trunk lid is warped and not sheeting the rain water properly. For the time being, I have pulled the weather strip flap up across the entire back and it is resting on the back edge of the trunk lid. Once I open the trunk of course, it will try to return to its original position. I am hoping that leaving it this way for a little while will reshape it to the way it needs to be and eliminate the leak. If not, I guess I'll have to explore replacing the entire window seal and flap (all one part)...
    Reply With Quote  
     

  4. #4 Re: Rain leaking into trunk on 2008 Grand Prix base 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    gonna need pics or a vid of this one.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  5. #5 Re: Rain leaking into trunk on 2008 Grand Prix base 
    GrandPrix Junkie spazzz's Avatar
    Join Date
    Nov 2012
    Location
    Madison
    Posts
    3,328
    Thanks (Received)
    3
    Likes (Received)
    8
    Dislikes (Received)
    0
    Did you take the trunk lid liner off to make sure it isn't the spoiler bolt holes?
    Reply With Quote  
     

Similar Threads

  1. 2008 Grand Prix - Base
    By 67GTONUT in forum For Sale - Vehicles
    Replies: 1
    Last Post: 08-24-2013, 11:21 AM
  2. 2008 grand prix (base) running hot.
    By unzip2000 in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 18
    Last Post: 04-02-2013, 11:42 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •