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Have a leak in the passenger side of my 2008 Acadia. This is the third time it will need to be fixed. In addition to this, not sure if the moisture caused this, but every time i would turn the key off and remove the key from the ignition the car would still be on and idle roughly, than finally turn off. I did notice a high pitch sound in the engine after this happened. Now the engine light came on.
 

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yes- engine running with key out- is a sign that water instrusion has gotten into the electronics.
 

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heres a bulleting regarding engine run on..

Bulletin No.: 08-08-57-003C

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TECHNICAL

Bulletin No.: 08-08-57-003C

Date: July 15, 2011

Subject: Floor Wet Under Carpet/Engine Continues to Run with Key Off/Possible No Crank/No Start/Communication Loss/Various Electrical Concerns (Seal Seam)
Models:
2008-2012 Buick Enclave
2007-2012 GMC Acadia
2007-2010 Saturn OUTLOOK
Supercede:
This bulletin is being revised to add model years and update the Correction information. Please discard Corporate Bulletin Number 08-08-57-003B (Section 08 - Body and Accessories).

Condition

Some customers may comment on any, or a combination of, the following conditions:

- Evidence of a water leak at the right side A-pillar and/or the right front floor is wet under the carpet.
- Various electrical concerns such as: Engine Continues to Run with Key Off/Possible No Crank/No Start/Communication Loss/Various Electrical Concerns, which may be a result of a water leak on the IP BEC.
- Other electrical related conditions that may be communication issues between certain electrical modules due to water dripping on the IP BEC.


Cause
Water from the right front sunroof drain hose exits the vehicle through the plenum (upper arrow) and may re-enter through the un-sealed seam at the front of the dash. Refer to lower arrow in the illustration.

In more current models years, sunroof drain hose and windshield related issues have sometimes been found to be a source of a water leak in the A-pillar area. This water can also sometimes leak on the IP BEC and/or onto the floor area.

Correction

For Model Years 2007-2008
Important
Inspect the front drain hoses to ensure that they are free of clogs or kinks, and that water is properly flowing through the hoses.

1. Remove the windshield wipers and cowl screen where sealing repair is to be done.
Important
Inspect the IP BEC for wetness and/or any green colored corrosion.
Important
During water testing, do not point the nozzle/hose upward on the cowl area as this is likely to force water entry where a leak may not even be existent.

2. In order to verify the waterleak, run a small amount of water into the square hole inside the cowl while looking at the IP BEC.
3. Allow the water to dry and proceed to step 4.
4. Seal the seam INSIDE the opening at the bottom and to the right and left of the arrows in the illustration. Seal the full length of the dotted line. Seal the seam with P/N 12378500 (in Canada, use 10952233) Medium Body Seam Sealing Compound or equivalent.


For Model Years 2009-2012

- Inspect the right side A-pillar/windshield area and water test for any leaks.
- Inspect the front drain hoses to ensure that they are free of clogs or kinks, and that water is properly flowing through the hoses.
- Inspect the IP BEC for wetness and/or any green colored corrosion.
 

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Hi rammstein,

I'm sorry to hear this is the third occurrence of this concern! I do apologize for my delay in seeing your post as we have been experiencing some technical difficulties. Were you able to resolve the concern? If you are still having any vehicle issues, we would be happy to help.

Jessica
GMC Customer Care

rammstein said:
Have a leak in the passenger side of my 2008 Acadia. This is the third time it will need to be fixed. In addition to this, not sure if the moisture caused this, but every time i would turn the key off and remove the key from the ignition the car would still be on and idle roughly, than finally turn off. I did notice a high pitch sound in the engine after this happened. Now the engine light came on.
 

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Mine did the same we had to replace the inside fuse box. But now we still have the leak on the passenger side frame we taped off the sunroof and the moon roof. Still is getting wet on that side of the roof. Idk where else this water is coming from
 

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Mine did the same we had to replace the inside fuse box. But now we still have the leak on the passenger side frame we taped off the sunroof and the moon roof. Still is getting wet on that side of the roof. Idk where else this water is coming from
Maybe there's a leak at the roof rack mount, or along the seam where the roof is attached to the body. A good body mechanic can reseal those areas.
 
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