Need help with moonroof - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-09-2004, 02:33 PM   #1
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Default Need help with moonroof

Dose anyone know how to fix a leakey moonroof?
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Old 03-09-2004, 02:36 PM   #2
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I am asumming that it is the moonroof leaking because there are some water stains on the inside of my roof, but I am not sure because it has not rained hard enough for me to find the leak for certain.
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Old 03-09-2004, 03:04 PM   #3
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Quote:
Originally Posted by Sigma
I am asumming that it is the moonroof leaking because there are some water stains on the inside of my roof, but I am not sure because it has not rained hard enough for me to find the leak for certain.
Take it to a car wash?
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Old 03-09-2004, 03:23 PM   #4
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Open the sunroof all the way and check the 2 drain holes visible in the front corners. Make sure there'* no debris. Remove your A-pillar trim and make sure the hoses aren't plugged (pull them off, and run a piece of wire through the drain holes, then down the tubes).

Do you have wind noise? The sunroof seal (weatherstripping) replacement procedure is in Techinfo. Nevertheless, even if water gets past this seal, it should still drain out the pillars without getting the car wet if the drains aren't plugged.

Moving this to 92-99.
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Old 03-10-2004, 11:47 AM   #5
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Right now washing my car would be a total waste of money, most of the roads I have to drive on are verry muddy, rain is also in the forcast.
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Old 03-10-2004, 11:53 AM   #6
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I was not sure if there were drain holes or not so I will check on them. There is also some wind noise coming frome this area, but I also have pretty bad door seals (I can feel wind through the back of the back doors).
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Old 03-10-2004, 05:19 PM   #7
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My 94 GTP had the same problem because the gasket was shot. It would only leak in a really heavy downpour though. The wind noise was a big indicator that it was the gasket though. After that was replaced the problem went away.
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Old 03-11-2004, 12:04 AM   #8
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I just had the same problem (clogged drain hoses). Fortunately I caught the problem before the headliner stained
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Old 03-11-2004, 10:18 AM   #9
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The head liner was stained when I bought it and I checked the drain holes and they were working fine. So I figure that they clooged on the original owner and he unplugged them, after it started to leak inside. but thank you.
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Old 03-11-2004, 01:22 PM   #10
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I posted an idea for removing water stains from headliners in Detailing a couple weeks ago. You should try that.
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