Tire Valve problems of the 1997 Chevrolet Lumina

The contact owns a 1997 Chevrolet Lumina. When the contact attempted to drive the vehicle, he noticed that the front driver side tire had become flat. He began changing the tire and noticed that the valve stem was defective. A week prior to the failure, the contact had the rear passenger side tire repaired for the same defect. The vehicle has been diagnosed by the dealer. The current and failure mileages were 74,000. Updated 07/08/08. Four tires and valve stems were replaced in may 2006. They have since been replaced again in June 2008. Updated.