I have a 2004 chevy impala LS and I am having a very perplexing problem. Everytime it rains, I have 1-2 inchs of water on the passenger side front or the passenger side back on the floor. I can't find a leak and the seals look ok, what is going on?

Asked by Aug 17, 2012 at 08:43 AM

Question type: Maintenance & Repair

3 Answers

209,855

Sounds like a door gasket or the sunroof is leaking (if you have one.) Have someone sit in the car while someone outside the car sprays it down with the hose to pinpont the issue. My bet it is a door gasket/seal.

30

Hello! I have found so far that on the forums the likelyhood of this problem is the pinchweld where the body of the car or in this case the firewall curves up to met with the windshield and the use of urethane sealer or silicone is used to seal any deterioration of the existing gasket. A good recoating or spreading of the sealer will resolve the problem as well as the one on the passenger's side where the weatherstrip sits on the pinchweld above the cabin air filter as it is a good idea to seal it together since it has a tendency to slip off over time especially when going over bumps and such. There are a few videos on Youtube.com which cover the passenger's side and yet to find one to discuss the driver's side concern. This is a likely problem on many GM vehicle, but more so on the Pontiacs as the Windshield develops leaks more so around the glass.

1 out of 1 people think this is helpful.
30

Here's another answer on the Driver's side question of the leak on GM vehicles: Re: water in driver's side floor area Ok, update on my water leak issue.. Found out it only does it when it rains or its washed. Pulled the driver side fender liner and windshield wiper and cowl off. ( had to fix spray nozzle on passenger side wiper anyhow, was clogged, air compressor fixed that. ) So i pulled the carpet up once again, stock a deep socket under the plastic floor board cover to keep it propped up and had my daughter watch for water as I hit different spots on the firewall.. Started low and found i had a few drips coming from the grommet that the E brake goes through the firewall. That was not my problem. As i went up with The hose the problem became worse. Somewhere its was running down the firewall and getting in through a cracked factory seam seal where the kick panel/firewall meet. If you have looked under the carpet and under the black plastic there is a ridge that runs the length of the driver side floor board and water would pool up there then soak the foam and the carpet padding, you can’t see it unless you pull back the black plastic with the foam underneath it. I couldn’t see the crack in the seam sealer, but you could damn sure see the water pouring in.. I dried it up , cleaned it real well with rubbing alcohol, slapped down some 3m seam sealer and presto leaked fixed. FYI i have invested a lot of time trying to find this damn leak.. I hope this helps someone else to save a lot of the headache.. If you have a leak start the water low until you find leakage, that way you can pinpoint where its at.. I guess if you really wanted to pull the fender off you could seal it from the outside as well, but i think the factory just seals the interior at that point. In my previous response I addressed the passenger's side as well, but here's a reference point too. http://www.justanswer.com/chevy/18tyr-2004-impala-water-leak-pass-side-dash.html Hope this helps on both sides of the vehicle leaks.

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Water pooling on passenger side floor 6 answers

    Question on my vehicle. I wanted to know if anyone has had this same problem with their Blazer. I've got a good amount of water pooling on the floor on the passenger side. Obviously it happens when we...

    1999 Chevrolet Blazer 4 Door LS 4WD

    -

    Maintenance & Repair

  • Wet carpet on the passenger side. Any idea what could be leaking? 8 answers

    The carpet on the passenger side is soggy wet, however, the carpet around the perimeter and under the dash on that side is not wet. The only wet spot other than underneath the floor mat appears to be...

    2004 Chrysler Pacifica Base AWD

    -

    Maintenance & Repair

  • Water leak 8 answers

    I have a water leak that appears as totally wet carpets on both the driver and passenger side, at the front. I have not found it when I am driving, but it shows up after a heavy rain and the van has b...

    1998 Chevrolet Venture 3 Dr LS Passenger Van

    -

    Maintenance & Repair

  • front passenger floor water 6 answers

    I have a lot of water on the passenger front floor. Could this be from the moonroof or the door seals.

    1995 Buick Riviera Supercharged Coupe

    -

    Maintenance & Repair

Shortcuts

Search Maintenance & Repair Questions

Maintenance & Repair Experts

#1 Tom Demyan
Tom Demyan
Reputation 149,960
#2 FordNut
FordNut
Reputation 102,920
#3 dandyoun
dandyoun
Reputation 83,980
View All