Tires and ABS
SPARE TIREUsing the compact spare tire supplied with the vehicle will not affect the operation of the ABS. The Electronic Brake/Traction Control Module (EBCM/EBTCM) software can compensate for this smaller tire. However, increased stopping distances may occur due to reduced tire tread depth and width of the compact spare tire. When using the compact spare tire on the rear axle the Traction Control System (TCS) will cycle and limit acceleration for about the first 15 seconds of driving after each engine start. After that time the smaller tire will not affect the operation of TCS.
REPLACEMENT TIRES
Tire size is important for proper performance of the ABS VI/TCS. Replacement tires should be the same size load range and construction as the original tires. Replace tires in axle sets and only with tires of the same Tire Performance Criteria (TPC) specification number. Use of any other tire size or type may seriously affect the ABS VI/TCS operation.