The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. If your vehicle has this feature, sensors are mounted on the tire and wheel assembly. The TPMS sensors transmit tire pressure readings to a receiver located in the vehicle once every 60 seconds while the vehicle is being driven, and once every 60 minutes if the vehicle is stationary for more than 15 minutes.

If your vehicle has the base audio system, the Driver Information Center (DIC) displays TPMS warnings and messages on the radio's display screen. See System Controls and DIC Warnings and Messages for additional information and details about the DIC operation and displays. If your vehicle has the Navigation system, TPMS warnings and messages are displayed on the message center screen, located inside the tachometer. See Message Center for information about the message center operation and displays.

If a low tire pressure condition is detected, the TPMS will display the Check Tire Pressure message on the DIC or message center and, at the same time, illuminate the low tire pressure warning symbol on the instrument panel cluster.

Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label.

When the low tire pressure telltale is illuminated, one or more of your tires is significantly under-inflated.

You should stop and check your tires as soon as possible, and inflate them to the proper pressure.

Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability.

The Tire and Loading Information label shows the size of your vehicle's original tires and their recommended cold inflation pressures. See Loading the Vehicle , for the location of the tire and loading information label. Also see Inflation - Tire Pressure .

Your vehicle's TPMS can alert you about a low tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection and Rotation and Tires .

Notice: Do not use a tire sealant if your vehicle has Tire Pressure Monitors. The liquid sealant can damage the tire pressure monitor sensors.

TPMS Sensor Identification Codes

Each TPMS sensor has a unique identification code. Any time you replace one or more of the TPMS sensors or rotate the tires, the identification codes will need to be matched to the new tire and wheel position. The sensors are matched, to the tire and wheel positions, in the following order: left front (LF), right front (RF), right rear (RR), and left rear (LR) using a TPMS diagnostic tool. See your GM dealer for service.

The TPMS sensors may also be matched to each tire and wheel position by increasing or decreasing the tire's air pressure. When increasing tire pressure do not exceed the maximum inflation pressure indicated on the tire's sidewall.

You will have two minutes to match the first tire and wheel position, and five minutes overall, to match all four tire and wheel positions. If it takes longer than two minutes, to match the first tire and wheel, or more than five minutes to match all four tire and wheel positions the matching process stops and you will need to start over.

The TPM matching process is outlined below:

1. Set the parking brake.
2. Turn the ignition switch to ON with the engine off.
3. Using the Remote Keyless Entry (RKE) transmitter, lock and unlock the vehicle's doors.
4. Press the lock and unlock buttons, at the same time, on the RKE transmitter. A single horn chirp will sound, indicating that the TPMS system is ready, and the sensor matching process can begin.
5. Start with the driver's side front tire.
6. Remove the valve cap from the valve stem. Activate the TPMS sensor by increasing or decreasing the tire's air pressure for five seconds, or until a horn chirp sounds. The horn chirp, which may take up to 30 seconds, confirms that the sensor identification code has been matched to this tire position. To decrease the tire's air-pressure use the pointed end of the valve cap, a pencil-style air pressure gage, or a key.
7. Proceed to the passenger's side front tire, and repeat the procedure in Step 6.
8. Proceed to the passenger's side rear tire, and repeat the procedure in Step 6.
9. Proceed to the driver's side rear tire, and repeat the procedure in Step 6.
10. After hearing the confirming double horn chirp, for the left rear tire, exit the matching process by turning the ignition switch to OFF.
11. Set all four tires to the recommended air pressure level as indicated on the tire and loading information label.
12. Put the valve caps back on the valve stems.

The TPMS will not function properly, if one or more of the TPMS sensors are missing or inoperable. If your vehicle has a compact spare tire, the spare tire and wheel assembly does not contain a TPMS sensor. If you replace one of the road tires with the spare, or if the system detects a missing or inoperable sensor, the Service Tire Monitor System message will be displayed on the DIC. If you have replaced a tire and wheel assembly without transferring the TPMS sensors, the error message will be displayed. Once you re-install the TPMS sensors, the message should go off. See your GM dealer for service if all TPMS sensors are installed and the error message comes on and stays on. Have your vehicle serviced as soon as possible.

If your vehicle has a message center and the system detects a missing or inoperable sensor an error message of several dashes - - - will be shown on the message center display. If you have replaced a tire and wheel assembly without transferring the TPMS sensors, the error message will be displayed. Once you re-install the TPMS sensors, the error message should go off. See your GM dealer for service if all TPMS sensors are installed and the error message comes on and stays on.

The TPMS operates on a radio frequency subject to Federal Communications Commission (FCC) Rules and with Industry and Science Canada.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause interference.
2. This device must accept any interference received, including interference that may cause undesired operation.

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions:

1. This device may not cause interference.
2. This device must accept any interference received, including interference that may cause undesired operation of the device.

Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment.