2003 Chevrolet Impala Owner's Manual - Page 316

It can also be reset through the radio using the following steps: 1. Turn the ignition to ACC or ON and turn the radio off. 2. Press and hold the TUNE DlSP button on the radio for at least five seconds until SETTINGS is displayed. 3. Press the SEEK SCAN up or down arrow to scroll through the main menu. 4. Scroll until TIRE MON appears on the display. 5. Press the 1 PREV or 2 NEXT button to enter the submenu. RESET will be displayed. 6. Press the TUNE DlSP button to reset. A chime will be heard to verify the new setting and DONE will be displayed for one second. 7. Once the monitor has been reset, scroll until EXIT appears on the display. The system completes the calibration process during driving. The system normally takes 15 to 20 minutes of driving in each of three speed ranges to "learn" tire pressures. The speed ranges are 15 to 4 mph (25 to 65 km/h), 40 to 65 mph (65 to 105 km/h) and above 65 mph (105 km/h). When learning is complete, the system will alert you after two to eight minutes if a tire is 12 psi (83 kPa) different from the other three tires. Detection thresholds may be higher and detection times may be longer on rough roads, curves and at high speeds. The system is not capable of detection at speeds greater than 70 mph (1 10 km/h). 8. Press the TUNE DlSP button to exit programming. A chime will be heard to verify exit. 5-63