» » »

Buick Q&A

Ask Your Question

2004 Buick Rainier Question: Water coming from underneath passenger dash board onto rug.

 

Question

jcastro, 4.2L 6 Cylinder, Wyncote, PA, June 03, 2010, 11:34
 Rookie

Water coming from underneath dash into rug in the passenger side,not sure if its heater core or air condition problem.

2 Answers
Flag This
  • Medium-star Best Answer
    dandd June 04, 2010, 10:47
    Profile_thumbnail
     Master

    If the liquid tastes sweet it is anti-freeze, if it is just water, then it is from a plugged up A/C water drain hose.

    Flag This
  • Reply

    Visitor, July 26, 2010, 13:13

    I have the same problem on the same vehicle. It is definitely A/C condensation. I cannot find any plugged drains. If I run the Rainier with the passenger side carpet pulled back, I can see the leak begin a few minutes after the A/C is turned on. It makes about 1 gallon of water an hour.

    update;
    This turned out to be the A/C drain tube located on a nipple sticking out from the firewall, next to the A/C hoses. Pull the tube, be prepared to get a lot of water, then clear the tube and put it back on.

    Flag This
  • Reply

    Visitor, December 01, 2010, 07:05

    Thank you much. That's exactly what I found. The drain plug was clogged with alot of old leaves.

    Flag This
  • Reply

    Visitor, July 12, 2011, 20:55

    Thank You, Thank You...Thank You!! Exactly what it was...Mechanic would have charged me 300 bucks and told me "your water pump is backed up" and I would have believed it and paid it. After all water coming into the cabin looks like a serious problem, and the water pump has to do with water right?? Pulled the rubber hose, water came out, cleaned it with a rag and plugged it back in...30 seconds and the problem was solved.

    Reply
    Flag This
  • Answer #2

    Visitor, November 30, 2010, 10:23

    Air condition drain plug is clogged. The drain plug is under the hood behind the ac compressor on the firewall.

    Flag This
  • Reply

    Visitor, December 01, 2010, 07:08

    Thanks again, that's what I found. The drain plug was glogged with alot of old leaves.

    Reply
    Flag This