Tire Pressure Monitor
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster (IPC) receives serial data message from the tire pressure monitoring (TPM) system indicating the front and rear tire pressure. The driver information center (DIC) will display the pressure for each of the front and rear tires. Tire pressure values are not resettable through the DIC. The tire programming menu can only be achieved with the vehicle transmission in PARK.