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Discussion Starter #1 (Edited)
Hey folks, I noticed that my Z is leaking water. The water seems to collect on the shelf behind the seats as well as the "storage cup" in the back trunk area.
I think the water is coming from somewhere on the drivers side. I read there is a drain line over there somewhere that can come unseated from the drain hole and cause leaks.
I also believe there is a leak near the aft corner of the passenger side window. I don't tihnk it is from where the glass meets the weather strip, but rather from some misguided water in the water channel that serves as trim around the window. I noticed a little moisture on the headliner in that area thus the reason I believe there is leakage over there as well.

Any and all help is certainly appreciated. If anyone has any diagrams they can post regarding this draining system I mentioned I would appreciate that as well.

Jim
 

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General Waterleak Guide #02-08-57-003
General Waterleak Guide
1997-2002 Chevrolet Corvette

Condition 1
Water is dripping on the passenger side transmission tunnel.

Cause
The plentium drain may be plugged or compressed.

Correction
Inspect the drain and unplug, if necessary.


Condition 2
Water is dripping on top of the passenger side carpet.

Cause
A wire harness leading into the passenger side compartment may be mis-routed (bent upward) at the first split in the wire harness. This may allow water to enter the harness and into the passenger side compartment. Refer to the arrow in the illustration.

Correction
Remove the battery and push the harness downward.
Verify the leak by flooding the front of the dash. Refer to the arrow in the illustration.

Condition 3
The carpet is wet under the passenger side floor.

Cause
The dash attaching bolts may not be sealed. Refer to the bolts in the illustration.
The lower hinge pillar may not be sealed. Refer to the arrow in the lower right hand corner in the illustration above.

Correction
Verify the leak by flooding the hinge area. Refer to the arrow in the illustration.
Clean the area with one of the cleaners listed below.
Reseal the area with the Kent™ sealer listed below.

Condition 4
Water is running down the front edge of the door or water is on top of the sill plate.

Cause
The butyl strip under the seal at the base of the "A" pillar may not be sealing properly or the push-in fastener may not be seated.

Correction
Clean the area with one of the cleaners listed below.
Reseal the "A" pillar starting at the bottom of the weatherstrip retainer with the GM sealer listed below. Refer to the dotted line in the illustration for sealing.


Condition 5
Water is running down the front edge of the door or water is on top of the sill plate.

Cause
Water may be leaking around the weatherstrip at the top of the door due to an undesirable nub in the weatherstrip at the top of the door. Refer to the arrow in the illustration .
Two screws may not be sealed under the "A" pillar garnish molding. Refer to the illustration. During water test with the "A" pillar molding off, there may be water coming out of either the garnish molding retaining hole or the wire harness retaining hole. Refer to the arrow in the illustration.

Correction
Replace the weatherstrip.
Seal the two screws with the Kent™ sealer listed below.


Condition 6
The floor is wet behind the seat belts.

Cause
The "B" pillar weatherstrip may not be sealed properly.

Correction
Reseal the weatherstrip with the GM sealer listed below. Refer to the dotted line in the illustration for sealing area.


Condition 7
There may be a leak around the perimeter of the hard top causing water to drip from the garnish molding into the rear compartment.

Cause
There may be a void in the sealer between the body and the hard top.

Correction
Clean the area with one of the cleaners listed below and seal the area shown in the illustration with the Kent™ sealer listed below.


Condition 8
The floor is wet behind the seat belts (Hardtop/ Z06 only).

Cause
The top corner of the weatherstrip may not be sealed properly. Refer to the area shown in the illustration.

Correction
Reseal the weatherstrip with the GM sealer listed below. Refer to the sealer in the illustration.

Condition 9
The floor is wet behind the seat belts or water seems to be entering through the hole in the interior trim panel where the seat belt feeds through.

Cause
The fit where the front edge of the convertible top stowage compartment lid "protector" contacts the rear edge "bulb seal" of the "mucket"*. Refer to the illustration above.

* "Mucket" is the term used to refer to each end of the convertible top stowage compartment lid weatherstrip.

The front edge of the stowage lid protector should overhang the stowage lid by approximately 3 mm (0.12 in). That 3 mm (0.12 in) overhang should then firmly contact the bulb seal rear edge of the mucket to complete the seal between the stowage lid and the lower "B" pillar.

Correction
If moving the lid forward or rearward, a 4 mm (0.16 in) gap between the rear of the stowage lid and the front of the trunk lid must be maintained.
Adjust the stowage lid cover downward slightly for more contact. Refer to the illustration above.


Cleaners
Kent Acrosol
3M® General Purpose Adhesive Cleaner, P/N 08984
Dominion Sure Seal, Sure Solve BSS
Sealer
Kent Automotive™, Wet/Dry Re-Sealant P/N 10570 11 fl. oz. cartridge (in Canada P/N 10570, 325 ml)

Kent Wet /Dry Re-Sealant can be purchased by calling 1-800-654-6333 (in Canada, 1-800-563-1717)

GM Weather Strip Adhesive Gel-Black 2 fl. oz tube, P/N 12345096

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© Copyright General Motors Corporation. All Rights Reserved
 

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Water Leak

I had the same problem as you. Water coming in the back compartment and running down the wheel well onto my carpeting. It also ended up in one of the three storage areas in the trunk and would drip out a tiny drain hole. The dealer and I found that where the Z06 Fixed Roof is attached across the back, that there is a small u-shaped channel which you can see with the trunk lid open. The GM technician used what looked like a dentist-cleaning tool and ran it along this channel. You could feel the gasket most of the way across this u-shaped channel with the "dentist like tool". In one area you could NOT feel the gasket. The technician got some black 3-M caulking that came on a sheet in strips about 1/4 inch in diameter and about 12 inches long and carefully ran a bead into the missing area and then ran multiple beads all the way across the back in this tiny u-channel and pressed it tight with a plastic razor blade. The water was coming in the middle of the area where the fixed roof met the body over the trunk and was running 2 feet in the molding to the side and dropping out on the wheel well molding and onto the carpeting. After the caulking, another water test and this time not a drop of water got in - NO LEAKS for 2 YEARS!!!!!!!
 

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I had the same problem had to take it to the dealer. They had to replace the entire window seal and it took them all day to do it. They also decided to give me a 6 1/2" scratch on my lower kick pannel! :flaming: I dont think many dealerships have people who know how to work on Corvettes. Unless you can find a dealership whose service dept. works on ALOT of Vette's with trained Corvette Tech's I would recomend taking it to a reputable body shop. Good Luck! :usa: :z:
 
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