K 2500 Suburban 4WD V8-5.7L VIN R (1999)
Wheels: Service and Repair
Aluminum Wheel Porosity Repair
1. Remove the tire and wheel.
2. Inflate the tire to 275 kPa (40 psi).
3. Submerge the tire/wheel into a water bath in order to locate the leak.
4. Make a mark on the wheel in order to record the leak areas.
5. Make a mark on the tire at the valve stem in order to record the orientation of the tire to the wheel.
6. Remove the tire from the wheel.
7. Use number 80 grit sandpaper to scuff the inside of the rim surface at the leak area.
8. Use general purpose cleaner such as 3M, P/N 08984 or equivalent, to clean the leak area.
9. Apply 3 mm (0.12 inch) thick layer of adhesive/ sealant, GM P/N 1052366 or equivalent, to the leak area.
10. Allow 1 hour for the adhesive/sealant to dry.
11. Install the tire to the wheel.
12. Align the mark on the tire with the tire valve stem.
13. Inflate the tire to 275 kPa (40 psi).
14. Inspect the tire/wheel for leaks.
15. Adjust the tire pressure to meet the specifications on the tire placard.
16. Balance the tire and wheel.
17. Install the tire and wheel.
