Owner's Manual
Page 335
...the Tire Identification Number (TIN). The letter T as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. GM's TPC specifications meet or exceed all federal safety guidelines. Tire Size The following the DOT ...that can be carried and the maximum pressure needed to support that load. (E) Tire Inflation: The temporary use only. (G) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code...
...the Tire Identification Number (TIN). The letter T as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. GM's TPC specifications meet or exceed all federal safety guidelines. Tire Size The following the DOT ...that can be carried and the maximum pressure needed to support that load. (E) Tire Inflation: The temporary use only. (G) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code...