GM Service Manual Online
For 1990-2009 cars only

The system is a sensing device designated to identify and display tire operating data and activate an alert or warning when tire pressure or temperature irregularities are detected.

Tire Monitoring

The system consists of wheel mounted sensor/transmitters inside each tire which measure contained air pressure and temperature then transmit this data to a receiver within view of the driver.

System Operation

The system operates continuously, transmitting air pressure and temperature data.

Important: Use of Chemicals. Temporary resealing or reinflation products containing internal sealers or propellants in any tire/wheel assembly may adversely affect the operation of the Sensor/Transmitters.

    • At approximately 5-minute intervals when the vehicle is moving faster than 10 kph (6 mph) unless pressure changes, then data is transmitted within 7 seconds.
    • Every 15 minutes when the vehicle is parked and pressure drops to 18 psi (124 kPa) or lower.