The Tire Pressure Monitoring (TPM) system allows the driver to monitor the tire pressure in all four tires. Pressing the GAGE 2 button on the DIC will display the tire pressure on the IPC. The TPM also warns the driver of under and over inflation condition with the following IPC messages:

The TPM system consists of four battery powered, water resistant, radio frequency signal generator sensors and a receiver with self diagnostic capabilities. A sensor is mounted on each wheel on the back of each valve stem. The valve stem and the sensor battery are integrated and are not serviceable. The receiver is located over the LH rear wheelhouse. The TPM system uses the same receiver as the RFA system. Refer to Keyless Entry System Description in Keyless Entry, for additional information on the RFA system.

The TPM system receives the information to monitor the tire pressure in all four wheels through each of the sensors. The vehicle must be traveling 16-24 km/h (10-15 mph) before the sensors will transmit the tire pressure information. At this speed, the sensor roll switches activate in order to transmit each unique location identification code to the receiver. The TPM sensors also send the tire pressure information to the receiver within the range of 0-427 kPa (0-60 psi). The receiver interprets this data and sends a message on the serial data line to the IPC. The IPC then displays the tire pressure information for each tire. Holding a magnet over the valve stem will manually override the sensor for programming or testing purposes. When the vehicle has been stationary for more than 1 minute, the sensors enter a power down or sleep mode and stop transmitting tire pressure information. This minimizes the battery consumption rate.

The TPM system uses barometric pressure information in order to determine how to compensate tire pressure readings for different altitudes. The receiver requests the information from the Powertrain Control Module (PCM) when the ignition is first turned to ON. If the receiver is unable to receive the information from the PCM, the receiver will substitute a default value and no compensation will occur.

The receiver also warns the driver of a tire over or under inflation condition. If the TPM sensors transmit a reading of over 289 kPa (42 psi), the receiver will send a message to the IPC to display the HIGH TIRE PRESSURE warning message. If a tire pressure reading between 34-172 kPa (5-25 psi) is sent, the receiver sends a message to the IPC to display the LOW TIRE PRESSURE warning message. If the reading sent is under 34 kPa (5 psi), a FLAT TIRE message will appear.