Aluminum Wheel Porosity Repair

Repair Procedure
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.
3. Use the following procedure to locate the leaking areas:
^ Inflate the tire to 275 kPa (40 psi).
^ Dip the tire and wheel into a water bath.
4. Mark the leak areas.
5. Remove the tire from the wheel.
6. Use 80 grit sandpaper to scuff the inside surface at the leak area.
7. Use a general purpose cleaner such as 3M P/N 08984 or equivalent to clean the area.
8. Apply a 1/8-inch thick layer of adhesive sealant GM P/N 1052366 or equivalent to the leak area.
9. Allow 12 hours of drying time.

Caution: Refer to Tire Inflation Caution in Service Precautions.

1. Install the tire on the wheel.
2. Pressurize to 275 kPa (40 psi).
3. Inspect for leaks.
4. Adjust the tire pressure in order to meet the specifications. Refer to Tire Inflation Pressure Specifications.
5. Balance the tire arid wheel assembly. Refer to Vibration Diagnosis and Correction under Steering and Suspension Testing and Inspection.
6. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.
7. Lower the vehicle.