2004 trailblazer. Water collecting on passenger floor. No coolant, just water.


Asked by Aug 28, 2015 at 06:24 PM about the Chevrolet TrailBlazer

Question type: Maintenance & Repair

The water send to pool when the AC is on
only. Not so much with heater, or that's just
residual moisture from when AC is on.

9 Answers


Tends* to pool.... Sorry for the typo. Single mom and need to figure out how to fix this myself.


This is condensation from the evaporator .... it (should have) a hose connected to a catch pan leading outside the car. It really is not a difficult fix - if you are a contortionist midget. Regardless, you have to get in up under the dash and find out where the drain hose has become disconnected and push it back on. It really is that easy


Would this be accessed via the dash where the stereo, heating/AC controls in the middle of the console dash area? I believe that area pops off. This would indeed make sense. However, can I get to it up under the dash as well? I'm not a midget contortionist, however I am 4'11 and can get into small spaces easily :-)

1 out of 1 people think this is helpful.

No offense intended. That was actually a bad-taste joke. My apologies. But yes, up way up where the evap grille is, way up where the the bevels for the heat/A/C exchange is. Not to be accessed by pulling the dashboard off, but rather getting up under from bottom. There is a 'grille' like thing, with heat-dissipating fins, and under that is a catch--pan. That hose....

2 out of 2 people think this is helpful.

None taken :-) I do believe I saw that up under where the glove compartment area is. It is plastic vented area with a sponge that is wet pushing through the vents/grill..... But I don't see a hose, and no access behind that from the inside. I'm assuming that sponge isn't supposed to be coming through that..... It's indeed wet!

1 out of 1 people think this is helpful.
William Ticker

Its not supposed to be wet you can see if the leak is there but if not its going to be the heater coil leaking cause it will leak on the passenger side floorboard.. hope you can find it to be just the tube but most likely its the heater coil leaking. You can look it up..

1 out of 1 people think this is helpful.

I agree with you William. Usually that would be the culprit. But only thing is she did say clear water, not coolant. The odor is distinctive, and what I don't understand is "sponge" ? Like some sort of insulation?

1 out of 1 people think this is helpful.

It's leaking where this spongy looking thing is pushing out the grille area that is up under the dash, straight down and onto the passenger side. My only issue is I've removed everything possible around the grill area where it's leaking and I can't get behind the grille..... Should I just shove this sponge like thing back up inside and see what happens or yank it out and hope for the best? I can't thank you guys enough for the help.....


Definitely just water and not coolant....

Your Answer

Add photo

Related Questions

  • 2004 chevy trailblazer shuts off 16 answers

    my car just turns off, when stopped in drive it idles good then all of a sudden there is a tremor and the rpm drops and dies, it starts right back up.

    2004 Chevrolet TrailBlazer LS


    Maintenance & Repair

  • 2002 Trailblazer fan throwing coolant 5 answers

    Alright so I just changed out my rad bc mechanic said it needed to be done. Got everything filled up, turned on the car and there was coolant under the car. Popped the hood only to see the 15 dollar...

    Chevrolet TrailBlazer


    Maintenance & Repair

  • coolant leak 1 answer

    hi i have this coolant leak behind the block of my 2002 trailblazer 4.2 inline 6 engine and i cant really tell were is coming from i have to fill up with water everyday it only drips wen car is...

    2002 Chevrolet TrailBlazer LTZ 4WD


    Maintenance & Repair

  • known factory defect due to water leak in rear cargo area 4 answers

    Have had my TB in Carmax auto shop 7 times for water leak in rear cargo area that collects in storage compartment. Problem still continues ever after leak found and sealed by master mechanic, now sour...

    2007 Chevrolet TrailBlazer LT


    Maintenance & Repair

  • 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


Looking for a Used TrailBlazer in your area?

CarGurus has 6,221 nationwide TrailBlazer listings starting at $999.


Search Chevrolet TrailBlazer Questions

Chevrolet TrailBlazer Experts

#1 Tom Demyan
Tom Demyan
Reputation 640
#2 dandyoun
Reputation 540
#3 tennisshoes
Reputation 500
View All

Related Models For Sale

Used Chevrolet Tahoe"
1,160 Great Deals out of 36,620 listings starting at $1,995
Used GMC Envoy"
88 Great Deals out of 2,596 listings starting at $2,500
Used Jeep Grand Cherokee"
1,231 Great Deals out of 74,214 listings starting at $1,500
Used Ford Explorer"
1,396 Great Deals out of 72,124 listings starting at $300
Used Chevrolet TrailBlazer EXT"
18 Great Deals out of 1,525 listings starting at $2,500
Used Chevrolet Silverado 1500"
2,496 Great Deals out of 144,768 listings starting at $1,995
Used Chevrolet Blazer"
1,634 listings starting at $1,999
Used Chevrolet Impala"
987 Great Deals out of 35,893 listings starting at $700
Used Chevrolet Equinox"
1,600 Great Deals out of 67,531 listings starting at $1,400
Used Dodge Charger"
701 Great Deals out of 30,344 listings starting at $1,995
Used Chevrolet Camaro"
840 Great Deals out of 39,078 listings starting at $2,650
Used Dodge Durango"
409 Great Deals out of 22,812 listings starting at $1,700
Used Ford Escape"
1,750 Great Deals out of 95,103 listings starting at $500
Used Chevrolet SS"
7 Great Deals out of 662 listings starting at $24,500
Used Ford F-150"
3,287 Great Deals out of 217,270 listings starting at $1,000