GM Service Manual Online
For 1990-2009 cars only

The check tire pressure system can alert you to a large change in the pressure of one tire. The system won't alert you before you drive that a tire is low or flat. You must begin driving before the system will work properly.

The CHECK TIRE PRESSURE message will appear on the Driver Information Center (DIC) or the system monitor TIRE PRESS light will come on if pressure difference (low pressure) is detected in one tire. The check tire pressure system may not alert you if:

    • more than one tire is low,
    •  the vehicle is moving faster than 65 mph (105 km/h),
    • the system is not yet calibrated,
    • the compact spare tire is installed,
    • the tire treadwear is uneven,
    • tire chains are being used, or
    • the vehicle is being driven on a rough or frozen road.

If the anti-lock brake system warning light comes on, the check tire pressure system may not be working properly. See your dealer for service. Also, see Antilock Brake System (ABS) Warning Light .

The check tire pressure system detects differences in tire rotation speeds that are caused by changes in tire pressure. The system can alert you about a low tire - but it doesn't replace normal tire maintenance. See Tires .

When the CHECK TIRE PRESSURE message appears on the Driver Information Center (DIC) or the systems monitor TIRE PRESS light 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 . Also check the tire pressure in all four tires as soon as you can. See Inflation - Tire Pressure .

Any time you adjust a tire's pressure or have one or more tires repaired or replaced, you'll need to reset (calibrate) the check tire pressure system. You'll also need to reset the system whenever you rotate the tires, buy new tires and install or remove the compact spare.

Don't reset the check tire pressure 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 check tire pressure system will not work properly and may not alert you when a tire is low or high.

To reset (calibrate) the system with a Driver Information Center (DIC):

  1. Turn the ignition switch to ON.
  2. Using the MODE and SELECT buttons, change the DIC to display TIRE PRESSURE.
  3. Press and hold the RESET button for about five seconds.
  4. The display should change to read TIRE PRESSURE RESET. If TIRE PRESSURE RESET does not appear on the display after about five seconds, see your dealer for service.
  5. When you release the button after seeing the TIRE PRESSURE RESET message, the display will change to read TIRE PRESSURE NORMAL.

To reset (calibrate) the system with a systems monitor:

  1. Turn the ignition switch to ON.
  2. Press and hold the TIRE PRESS RESET button for about five seconds.
  3. The TIRE PRESS light on the systems monitor should begin to flash. If the TIRE PRESS light does not begin to flash after about five seconds, see your dealer for service.
  4. Release the TIRE PRESS RESET button and the system should reset. The TIRE PRESS light will go out.

The system completes the calibration process during driving. Calibration time can take 45 to 90 minutes, depending on your driving habits. After the system has been calibrated, the system will alert the driver that a tire is low, up to a maximum speed of 65 mph (105 km/h).