Rear Floor or Trunk Wet on Top of Axle (Apply Sealer)

Some customers may comment that the rear floor or the trunk is wet.

Important: This gutter is designed to direct water off the back of the top, into the gutter, then into the rear quarter panels and out of the vehicle.

The sealer in the gutter located directly under the fifth bow may be leaking at the joint on the right or left side of the vehicle. Refer to the illustration above.

1. Fold down the rear seat.
2. Remove the center trim just under the back light.
3. Clean the inside of the gutter with one of the cleaners listed below.

Important: DO NOT SEAL THE OUTSIDE OF THE GUTTER

4. Seal the inside area of the gutter with Medium Body Seam Sealing Compound, P/N 12378500 (in Canada, use 10952233).
5. After the sealer has dried, water test the vehicle again to verify the repair.

Parts are currently available from GMSPO.

Cleaners

For vehicles repaired under warranty, use