GM Service Manual Online
For 1990-2009 cars only

Important: There are 3 different ways to reset the Tire Pressure Monitor (TPM) system. After resetting, the TPM system requires up to 30 minutes of straight line driving in each of the 3 speed ranges to complete the calibration process, for further information, refer to Tire Pressure Monitor Description and Operation . If the TPM system does not reset, or DTC C1245 remains current, refer to Diagnostic System Check - Vehicle in Vehicle DTC information.

Using the Exterior Lamp Switch

  1. Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication, or to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label in General Information.
  2. Turn ON the ignition, with the engine OFF.
  3. Cycle the exterior lamp switch from OFF to parking lamps 3 times within 5 seconds.
  4. Use the scan tool in order to clear the TPM DTC.

Using the RDS Radio, If Equipped

  1. Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication, or to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label in General Information.
  2. Turn the ignition to ACC or ON, with the engine OFF.
  3. Turn the radio OFF.
  4. Press and hold the DISP button until SETTINGS is displayed.
  5. Press the SEEK up or down arrows until TIRE MON is displayed.
  6. Press the PREV or NEXT button to enter the submenu. RESET will be displayed.
  7. Press the DISP button, A chime will sound and DONE will be displayed.
  8. Scroll until EXIT is displayed.
  9. Press the DISP button to exit the TPM reset mode. A chime will sound to verify exit.
  10. Use the scan tool in order to clear the TPM DTC.

Using the Scan Tool

  1. Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication, or to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label in General Information.
  2. Install the scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. With the scan tool select Special Functions.
  5. Select TIM Reset.
  6. Press the Reset soft key.
  7. Use the scan tool in order to clear the TPM DTC.