First, you need to remove the tire and wheel, inflate the tire to the manufactures specified pressure, locate the leak, indicate the leak areas, indicate the orientation of the tire to the wheel, and remove the tire from the wheel. Then, please scuff the inside of the rim surface at the leak area, clean the leak area, and apply a 3 mm (0.12 inch) thick layer of adhesive/sealant, GM P/N 1052366 or equivalent, to the leak area. You also need to align the inscribed mark on the tire with the valve stem on the wheel, install the tire to the wheel, inflate the tire to the manufactures specified pressure, and submerge the tire/wheel into a water bath. Finally, you should balance the tire and wheel, install the tire and wheel, and lower the vehicle.
By BobGM Specialist
28/10/2022