2004 Chevrolet Impala Owner's Manual - Page 329

When the LOW TIRE PRESSURE message comes on, you should stop as soon as you can and check all your tires for damage. (If a tire is flat, see If a Tire Goes Flat on page 5-75.) Also check the tire pressure in all four tires as soon as you can. See Inflation - Tire Pressure on page 5-65. The LOW TIRE PRESSURE message will also be displayed (while the ignition is on) until you reset (calibrate) the system. Don't reset the tire pressure monitor system without first correcting the cause of the problem and checking and adjusting the pressure in all four tires. If you reset the system when the tire pressures are incorrect, the system will not work properly and may not alert you when a tire is low. Any time you adjust a tire's pressure, rotate your tires, or have one or more tires repaired or replaced, you'll need to reset (calibrate) the tire pressure monitor system. You'll also need to reset the system whenever you buy new tires and whenever the vehicle's battery has been disconnected. To reset (calibrate) the system: The tire pressure monitor system can be reset two ways. With the ignition position at ON, pull the interior lamps control to the ON and OFF settings three times. 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 DISP 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 DISP 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. 8. Press the TUNE DISP button to exit programming. A chime will be heard to verify exit. The system completes the calibration process during driving. 5-67