For 1990-2009 cars only
- Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation .
- Inflate the tire to the manufactures specified pressure as stated on the tire.
- Submerge the tire/wheel into a water bath in order to locate the leak.
- Inscribe a mark on the wheel in order to indicate the leak areas.
- Inscribe a mark on the tire at the valve stem in order to Indicate the orientation of the tire to the wheel.
- Remove the tire from the wheel. Refer to Tire Dismounting and Mounting .
- Use number 80 grit sandpaper to scuff the inside of the rim surface at the leak area.
- Use general purpose cleaner such as 3M®, P/N 08984 or equivalent, to clean the leak area.
- Apply 3 mm (0.12 in) thick layer of adhesive/sealant, GM P/N 12378478 (Canadian P/N 88900041) or equivalent, to the leak area.
- Allow for the adhesive/sealant to dry.
- Align the inscribed mark on the tire with the valve stem on the wheel.
- Install the tire to the wheel. Refer to Tire Dismounting and Mounting .
- Pressurize the tire to 276 kPa (40 psi).
- Submerge the tire/wheel into a water bath in order ensure the leak is sealed.
- Inflate the tire to the specified pressure as stated on the tire placard.
- Balance the tire and wheel. Refer to Tire and Wheel Assembly Balancing - Off Vehicle .
- Install the tire and wheel. Refer to Tire and Wheel Removal and Installation .
Important: Do not damage the exterior surface of the wheel.
