THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT CHANGING THE TIRE AND WHEEL SIZE ON VEHICLES. GENERAL MOTORS WILL ONLY SUPPORT A TIRE CALIBRATION FOR TIRES THAT HAVE BEEN SIZED, TESTED AND DESIGNED FOR THE VEHICLE IN QUESTION AND ITS APPLICATIONS. TECHNICIAN SHOULD NOT USE THE INFORMATION THAT IS PROVIDED BY THE ANTILOCK BRAKING SYSTEM TIRE SIZE SELECTION.
