C6 flooding
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 1,040
Likes: 0
C6 flooding
My car's been great to me except it is known for little nagging problems that dealer cant fix. Here is the latest one. After a heavy rain storm a few days ago, my passenger floor pan is completely covered in water. From what I have heard, there is suppose to be a drain or something I have to clean out. Anyone have tips or ideas?
Team Owner
Joined: Jun 2005
Posts: 46,295
Likes: 2,596
From: Northern, VA
St. Jude Donor '15
"In honor of jpee"
I thought I read this morning that for an '05 there was something about an a/c line with packing material in it. See if you can find that thread. I'll do the same, had same result as you: water on the floor.
Safety Car
Joined: May 2006
Posts: 4,289
Likes: 129
From: Providence Forge, VA
St. Jude Donor '08-'09-'10-'11-'12
This was not an uncommon problem on C5s. The passenger side drain tube at the firewall would clog with debris and it would overflow into into the passenger side footwell (my C5 did it). I haven't looked at the C6 drain tube there, but that's what I'd check first.
Le Mans Master
Joined: Dec 2005
Posts: 7,753
Likes: 210
From: North Western Connecticut
Moderator
Joined: Dec 2002
Posts: 40,898
Likes: 4,351
From: Lakewood Ranch, FL
Need to find a new dealer. A leak like that would be serious to me. It does sound like a drain problem. You could trouble shoot it your self. AFTER you dry your interior, put down a bunch of newspaper or the like and then turn a water hose on the windshield and get under the dash and see where the water is coming in and try to find the source.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Drifting
Joined: Apr 2005
Posts: 1,757
Likes: 484
From: Portland Oregon
Need to find a new dealer. A leak like that would be serious to me. It does sound like a drain problem. You could trouble shoot it your self. AFTER you dry your interior, put down a bunch of newspaper or the like and then turn a water hose on the windshield and get under the dash and see where the water is coming in and try to find the source.
I had a leak in the same area that took two dealers to fix it. Mine turned out to be in the passenger A pillar that needed to be seam sealed. The problem with leaks is they are sometimes hard to find where the water is entering and then fixing and retesting to make sure it is fixed. Mine was at the dealer for several days for the correct fix.
Instructor
Joined: Feb 2008
Posts: 109
Likes: 2
From: HAMILTON NJ
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Customers may complain of water intrusion on the passenger floor. Or when diagnosing a vehicle for an unrelated concern, water may be noticed in the electrical center area near the passenger floor. This may be the result of an engine wire harness plugging the HVAC drain and preventing it from effectively draining the water or condensation from the HVAC case.
Recommendation/Instructions:
Inspect the HVAC drain for blockage. More specific, check the position of the engine harness especially the harness for the O2 sensor wires and move it away from HVAC drain.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Condition/Concern:
Customers may complain of water intrusion on the passenger floor. Or when diagnosing a vehicle for an unrelated concern, water may be noticed in the electrical center area near the passenger floor. This may be the result of an engine wire harness plugging the HVAC drain and preventing it from effectively draining the water or condensation from the HVAC case.
Recommendation/Instructions:
Inspect the HVAC drain for blockage. More specific, check the position of the engine harness especially the harness for the O2 sensor wires and move it away from HVAC drain.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Instructor
Joined: Feb 2008
Posts: 109
Likes: 2
From: HAMILTON NJ
i copied and pasted the p.i for water leak on p/s floor,but since it happened in a heavy rain i would check the cabin filter door and cabin filter to see if its wet. if it isnt i would see if there is a "water doctors" franchise in your area. we use them and their kill ratio for water leaks is 89 percent or so.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 1,040
Likes: 0
Can I have a picture of that area please
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Customers may complain of water intrusion on the passenger floor. Or when diagnosing a vehicle for an unrelated concern, water may be noticed in the electrical center area near the passenger floor. This may be the result of an engine wire harness plugging the HVAC drain and preventing it from effectively draining the water or condensation from the HVAC case.
Recommendation/Instructions:
Inspect the HVAC drain for blockage. More specific, check the position of the engine harness especially the harness for the O2 sensor wires and move it away from HVAC drain.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Condition/Concern:
Customers may complain of water intrusion on the passenger floor. Or when diagnosing a vehicle for an unrelated concern, water may be noticed in the electrical center area near the passenger floor. This may be the result of an engine wire harness plugging the HVAC drain and preventing it from effectively draining the water or condensation from the HVAC case.
Recommendation/Instructions:
Inspect the HVAC drain for blockage. More specific, check the position of the engine harness especially the harness for the O2 sensor wires and move it away from HVAC drain.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Instructor
Joined: Feb 2008
Posts: 109
Likes: 2
From: HAMILTON NJ
wish i knew how to copy the pic from the service manual. but its located p.s firewall to the lower right of the door for the cabin air filter
black tube running out and ends under the heater core hoses
black tube running out and ends under the heater core hoses
Heel & Toe
Joined: Jan 2007
Posts: 17
Likes: 0
From: Rancho Santa Margarita California
I have water dripping onto my passenger floor when I wash the car. It's dripping from near the right side glove box hinge. From there it drips on the kick panel and onto the floor mat and carpet on the right side. Someone here mentioned their A-Pilar was leaking. That would be my guess as to where mine is leaking.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 1,040
Likes: 0
I finally have the chance to play with the car tonight. I first dried the interior, then I laid paper towels on the carpet. I then proceeded to dump about 4 gallons of water on the car. It seems everything is dry, so I think gaskets might be sealing properly. So I guess the only other reason would be the AC condenser or user error (left the windows or door open, which i am 99.99% sure i didnt). Any other theories or suggestions?
thanks
thanks
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 1,040
Likes: 0
Freaking A, washed my car today. There were no drips into the car, but somehow the passenger carpet near the door started to become wet. Do you guys have any idea of what it might be?
I will look for the drain tomorrow when the car is on a lift. It's impossible to get to it from the hood
I will look for the drain tomorrow when the car is on a lift. It's impossible to get to it from the hood
Burning Brakes
Joined: Feb 2003
Posts: 856
Likes: 1
From: Bovina New York "WOOF"
St. Jude Donor '08
Racer
Joined: Mar 2008
Posts: 335
Likes: 1
My C6 had the same problems after insisting they tear all the interior out and look for a crack in the floor pan. So they agreed after looking at all the drain tubes bc they were all clean and they realized that there was a seam in the floor that needed to be seam sealed. Have your local dealer check this and it was covered under warranty
Team Owner
Joined: Nov 2007
Posts: 45,273
Likes: 8,545
From: Rochester, NY