Water in floor of car

Tiny
WFGEERS
  • MEMBER
  • 2004 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
I went to my car 2 days ago and the windows, locks, and interior lights did not work. Took it to my mechanic, have had him for over 15 years. He pulled up the carpet and found a lot of water underneath. The AC drain is working fine.
He pretty much traced the electrical problem to the Body Control Module. But until I find the source of the water he is reluctant to repair it. Is there any type of "re-call" on this model for some kind of leaking problem?
He also told me that the Dealer would have to put in the new Module because it had to be "programed" by the Dealer.
If no re-call then maybe a Glass Installer to find the leak.
What is the "usual" fee for the Module?
Thanks for your help. Bill
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Tuesday, August 10th, 2010 AT 3:42 PM

20 Replies

Tiny
MERLIN2021
  • EXPERT
Module is 300.00-600.00 depending where you buy it, plus an hour labour to install and program. Which side of the vehicle is getting wet? This may not be the BCM but could be this problem:
Hard/No Start, Fuel Gauge Inoperative/Fluctuates, SES/Check Engine Light On, ABS Warning Light On, TCS Warning Light On, TCS Activation, Service Traction System Message Displayed, All-Wheel Drive Disable Message Displayed, DTCs Set (Repair Connector) TECHNICAL SERVICE BULLETIN Reference Number(s): 01-08-45-005E, Date of Issue: August 29, 2006 Related Ref Number(s): 01-08-45-005, 01-08-45-005A, 01-08-45-005B, 01-08-45-005C, 01-08-45- 005D, 01-08-45-005E ARTICLE BEGINNING CONDITION Some customers may comment on one or more of the following conditions: Engine is hard to start Engine will not start Engine starts then stalls Fuel gauge is inoperative or fluctuates Service Engine Soon/Check Engine light is illuminated ABS Warning Light is illuminated TCS Warning Light is illuminated TCS activation Service Traction System message displayed All-Wheel Drive Disable message displayed These conditions may be intermittent. Upon investigation, the technician may find various DTCs set. CAUSE This condition may be due to water leaking into the interior of the vehicle, and/or spread terminals, at connector C305 that is located on the floor to the rear of the driver's seat. This connector is not sealed from the inside of the vehicle and water may enter the connector causing the terminals to become corroded. Also, the female terminals of the connector may have become spread apart causing an intermittent poor connection. CORRECTION Affected Model(s): 2002-2006 Buick Rendezvous; 2005-2007 Buick Terraza; 2000-2005 Chevrolet Venture; 2005-2007 Chevrolet Uplander; 2000-2004 Oldsmobile Silhouette; 2000- 2005 Pontiac Montana; 2001-2005 Pontiac Aztek; 2005-2007 Pontiac Montana SV6; 2005-2007 Saturn Relay Supercedes: This bulletin is being revised to add 2007 model year. Also, additional information was added to the Important statement. Please discard Corporate Bulletin Number 01- 08-45-005D (Section 8 - Body and Accessories). Corroded and/or spread female terminals in connector C305. Refer to Repairing
Terminals in the Wiring Systems sub-section of the appropriate service information. WARRANTY INFORMATION
repaired under warranty, use: IMPORTANT: Inspect the terminals at connector C305 for corrosion or spreading before replacing the fuel module or resistor card kit. Terminals can be accessed from underneath the vehicle. Do not attempt to repair any spread female terminals as this will result in a return repair. The female terminal must be replaced. If the terminals show signs of corrosion, determine the source of the water leak first and repair the water leak before repairing the terminals in connector C305. Refer to Corporate Service Bulletin Number 01-01-38-009A to determine a potential source for water in the vehicle interior. This affected 02-06's
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Tuesday, August 10th, 2010 AT 4:06 PM
Tiny
GRANYOUNG43
  • MEMBER
I am having the same problem in our 2004 montana as well, but it's not on the driver's side, it's more on the passenger side as well. And the service engine soon light is on, no there are no leaks in the windsheild, it's not the ac either. Please help, thank you
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Friday, June 22nd, 2012 AT 8:39 PM
Tiny
RIVERMIKERAT
  • MEMBER
Grangyoung, have you had it scanned for both soft and hard codes to see what is causing the CEL?

Check for missing grommets or plugs in the bulkhead between the passenger and engine compartments. Next, check for missing grommets under the plastic trim panels down by the feet, both in the sides of the body and the floor.

Knowing the codes might help give you an idea as to where the leak is.
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Wednesday, July 25th, 2012 AT 2:56 AM
Tiny
FIREBUG
  • MEMBER
  • 2003 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 120,000 MILES
I have been having a wet floor, ever since we started using our A/C. It gets really wet in the foot space where the drivers feet are. Can anyone tell me where the drain is located.
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Monday, August 26th, 2019 AT 7:02 PM (Merged)
Tiny
CWALKER65
  • MEMBER
I just took the mats out to sweep the van and noticed that mine is that way too. Any ideas?
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Monday, August 26th, 2019 AT 7:02 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
There is a drain tube for the AC should be on passenger side of the firewall. Down by floor . Clean it out you should water come out with AC on.
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Monday, August 26th, 2019 AT 7:02 PM (Merged)
Tiny
JIMHOWE
  • MEMBER
  • 2003 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 102,000 MILES
THe front driver side and passenger side carpets get soaked.
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Monday, August 26th, 2019 AT 7:02 PM (Merged)
Tiny
MADMIKE1735
  • EXPERT
The tube that lets the condensation out is clogged. When our ac is on for a while, and you park the car, do u get a puddle of water under the car? If not, bring it to a garage, and have them clean out your drain tube for your condensation from the ac. Black hose located on the firewalll.
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Monday, August 26th, 2019 AT 7:02 PM (Merged)
Tiny
MJGZ
  • MEMBER
  • 2002 PONTIAC MONTANA
  • 122,000 MILES
Whenever it rains, there is water on the driver side floor. Carpet and padding wet and wires casings too. Van had been looked at by GM dealerships and multiple mechanics. No leak can be found. We have even gone outside as it is raining to look for the source of the water entering the driver side floor. No leaks have been found, but the floor is still getting wet. No one can find the source. Any suggestions?
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-1
Monday, August 26th, 2019 AT 7:02 PM (Merged)
Tiny
SATURNTECH9
  • MEMBER
Take a garden hose and spray it at the windshield you will be able to see the water leak which will probably need to reseal the entire windshield which means replacement. Here is how you remove the wiper arms.

Pull upward on the arm while tapping on the pivot shaft.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
JONSGMA1
  • MEMBER
  • 2002 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
When the defrost is on, the driver side floor gets wet. It doesn't matter if it is on the warmest temperature, or a cooler on, or what speed the fan is on, or if the setting is on strictly defrost or floor/and defrost, the floor gets wet extremely wet. It haas been looked at by gm mechanics and many other ase certified mechanics. No one can figure it out. Ac drain is clear and heater core is good.
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
They are missing something. There is nothing else that would cause it to get wet. Tell me, is it water or coolant on the floor?
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
JONSGMA1
  • MEMBER
It is just water. No one can see the leaks or where it come in from
Does not happen when the ac is on.
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
There is a collection tray for the water to enter and then drained. It must be cracked.

This has nothing to do with when it rains, does it?
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
AARONSDEBBIE
  • MEMBER
  • 2002 PONTIAC MONTANA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 105,000 MILES
Flood waters got up to the bottom of marker lights in front. After the water went down I went out to see if it would start. Took off the air filter. There was a water line half way up the filter. It cranks over but no spark. Looked at oil and it looks clean. What do I have to do to get my car started? Possible problems. Looks like I had about 6 inches inside the van.
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
GMTECH
  • EXPERT
If the water was that high, you have a lot of work ahead of you. You are going to have to take every connector apart and blow all the water out and grease the connector. The module are most likely finished but dry everything out with a hair drier. Change the oil and fluids. It will take you a while but it could run by the time you are done.
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
ARCHITECT2
  • MEMBER
  • 2002 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 105,000 MILES
The carpet is very wet under the drivers feet. The water is clean and does not smell like antifreeze. Could the air conditioner condensate line be plugged? How is this accessed or what should I check?
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
MERLIN2021
  • EXPERT
There is a bulliten out on the a/c drain, but the passenger side floor will be wet? Here's the bulliten:


https://www.2carpros.com/forum/automotive_pictures/62217_ma_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_mb_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_mc_1.jpg

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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
TIM F
  • MEMBER
  • 1999 PONTIAC MONTANA
Air Conditioning problem
1999 Pontiac Montana 6 cyl Front Wheel Drive Automatic 125.00 miles

How do I find and clear the air conditioner condensation drain? Evaporator condensation is draining into passenger compartment.
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Monday, August 26th, 2019 AT 7:03 PM (Merged)
Tiny
DENNYP
  • EXPERT
The drain tube comes out of the firewall on the passenger side or the center section. You can use a coat hanger or other type of wire to run through the drain tube. There should be a 90 degree elbow on the drain tube that faces down. Be sure to put it back on.
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Monday, August 26th, 2019 AT 7:03 PM (Merged)

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