Using the Scan Tool

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Set all tire pressures to manufacturers specification.
Install the scan tool.
Turn ON the ignition with the engine OFF.
With the scan tool, select Special Functions.
Select Tire Pressure Reset.
Press the Reset soft key, TIRE PRESSURE NORMAL is displayed on the DIC.
Use the scan tool in order to clear the TPM DTC.