TPMS Instructions: 2010-21 Chevrolet Camaro

The tire pressure monitoring system (TPMS) alerts the driver when there is a significant change in tire pressure in any of the four tires and allows the driver to display individual tire pressures and their location in the driver information center (DIC) while the vehicle is being driven.

The TPMS uses a body control module (BCM), instrument panel cluster (IPC), DIC, radio frequency (RF) transmission pressure sensors in each wheel/tire assembly and serial data sets to perform system functions.

When the vehicle is stationary and the sensor’s internal accelerometer is off, the sensor goes into stationary mode. In this mode, the sensor takes a tire pressure sample every 30 seconds and transmits a stationary mode transmission only when the air pressure changes.

As the vehicle speed increases, centrifugal force activates the internal accelerometer, causing the sensor to enter rolling mode. In this mode, the sensor takes a tire pressure sample once every 30 seconds and transmits a rolling mode transmission every 60 seconds.

BCM receives and translates the data contained in each RF sensor transmission into sensor presence, sensor mode, and tire pressure. The BCM then sends the tire pressure and tire location data to the DIC via a serial data series, where the data is displayed.

The sensors continuously compare their current pressure sample with their last pressure sample and will transmit in re-measurement mode whenever a 1.2 psi tire pressure change has occurred.

When the TPMS detects a significant decrease or increase in tire pressure, the message “CHECK TYRE PRESSURE” is displayed on the DIC and a low tire pressure indicator is displayed on the IPC. Both the DIC message and the IPC indicator can be cleared by adjusting the tire pressure to the recommended pressure and driving the vehicle at over 25 miles per hour (40km/h) for at least two minutes.

BCM also has the ability to detect malfunctions in the TPMS. Any fault detected will cause the DIC to display the message “SERVICE TYRE MONITOR” and flash the TPMS IPC bulb for one minute before flashing continuously each time the ignition is ON until the fault is repaired.

TIRE PRESSURE MONITOR WARNING INDICATOR

When the TPMS detects a significant drop in tire pressure, the message “CHECK TYRE PRESSURE” is displayed on the DIC and a low tire pressure indicator is displayed on the instrument panel.

Both the message and the indicator can be cleared by setting the tires to the recommended pressure and driving the vehicle at over 25 miles per hour (40 km/h) for at least two minutes. The tire pressure monitor indicator icon on the IPC will flash for one minute and then remain lit and the DIC will display the message “SERVICE TYRE MONITOR SYSTEM” if one or more of the tire pressure sensors or other system components is malfunctioning or if all sensors have not been programmed successfully. If the warning indicator is still on, it means there is a problem with the TPMS. Refer to the appropriate manufacturer’s service information.

TPMS RESET PROCEDURE

NOTE: When the wheel has been turned or the tire pressure sensor has been replaced, review the tire pressure sensor again. When the TPMS detects a significant drop in tire pressure, the message “CHECK TYRE PRESSURE” is displayed on the DIC and a low tire pressure indicator is displayed on the instrument panel.

Both the message and the indicator can be cleared by setting the tires to the recommended pressure and driving the vehicle at over 25 miles per hour (40 km/h) for at least two minutes.

RE-STUDY TIRE PRESSURE SENSOR

NOTE: Once the TPMS learning mode is activated, each sensor’s unique identification code (ID) can be learned into the BCM memory. When the sensor ID has been learned, the BCM sounds a horn. This verifies the sensor has sent the ID and the BCM has received and learned it.

The BCM must learn the sensor IDs in the correct order to determine the correct sensor location. The first learned ID is assigned to the front left, the second to the front right, the third to the back right and the fourth to the back left.

NOTE: Each sensor has an internal low frequency (LF) coil. When the appliance is used in active mode, it produces an LF transmission that activates the sensor. The sensor responds to LF activation by transmitting in learning mode. When the BCM receives a learning mode transmission while in TPMS learning mode, it will assign that sensor ID to a location in the vehicle relative to the order in which it was learned.

NOTE: The sensor functions using the pressure increase/decrease method. Each sensor takes a pressure measurement sample once every 30 seconds while in stationary mode. If the tire pressure increases or decreases by more than 1.2 psi from the last pressure measurement, another measurement is immediately taken to verify the pressure change. If a pressure change does occur, the sensor transmits in learning mode.

When the BCM receives a learning mode transmission while in TPMS learning mode, it will assign that sensor ID to a location in the vehicle relative to the order in which it was learned.

NOTE: The learning mode will be canceled if the ignition is turned to OFF or if more than two minutes have elapsed for any unlearned sensors. If the learning mode is canceled before the first sensor is learned, the original sensor ID will be retained. If learning mode is canceled for any reason after the first sensor is learned, all IDs are deleted from the BCM memory and, if equipped, the DIC will display a dash for tire pressure.

If you do not use the scanner to start the re-learning procedure, the deviant signal from another vehicle equipped with TPMS that has just passed may be detected accidentally. If a random honking sound is heard from the vehicle while carrying out a learning procedure, it is likely that the stray sensor has been learned and the procedure needs to be aborted and repeated. In these circumstances, performing the TPMS learning procedure away from other vehicles would be highly recommended.

If activation of certain sensors does not cause the horn to sound, it may be necessary to turn the wheel valve stem to a different position because the sensor signal is blocked by other components. Before proceeding with the steps below, ensure that no other sensor learning procedures are performed simultaneously at close range; tire pressure is not adjusted in other vehicles equipped with TPMS in close proximity; and the parking brake switch input parameters are working correctly:

Use the parking brake (manual transmission only);

Turn on the ignition, with the engine OFF. The DIC is accessed via a five-way control on the right side of the steering wheel. Scroll to the tire pressure screen and make sure the tire pressure info display option is enabled. The info display on the DIC can be turned on and off via the Options menu;

Using the scan tool or DIC, select Tire Pressure Sensor Release. After this step is done, the dual horn chirp will sound and the left front turn signal will turn on;

Starting with the left front tire, study tire pressure using one of the following methods: Method 1: Hold the TPMS tool antenna against the sidewall of the tire close to the wheel rim at the valve stem location and then press and release the activate button and wait for the horn to sound.

Method 2: Increase/decrease the tire pressure for eight to 10 seconds, then wait for the horn to sound. The honk of the horn may occur before or up to 30 seconds after the eight to 10 second pressure increase/decrease period has been reached.

After the horn sounds, proceed to repeat the procedure for the remaining three sensors in the following order: front right, rear right, and rear left;

Once the LR sensors are learned, a double horn chirp will sound indicating all sensors have been learned;

Turn off the ignition to exit learning mode, and;

After learning mode exits, adjust all tires to the recommended pressure.

DEMOUNTING / INSTALLATION PROCEDURE

CAUTION: The tire must be removed from the wheel using the tire changer manufacturer’s instructions. Use the following information to avoid damage during removal/installation procedures.

NOTE: If a vehicle tire is replaced with a tire that does not have a tire performance criteria specification number (TPC Spec), the TPMS may provide an inaccurate low pressure warning. Non-TPC Spec tires can provide a low pressure warning that is higher or lower than the proper warning level achieved by TPC

When the wheel has been turned or the tire pressure sensor has been replaced, retrain the tire pressure sensor. (See RESET PROCEDURE.)

TIRE PRESSURE SENSOR

CAUTION: Do not inject tire fluid or aerosol tire sealant into the tires, as this may cause the tire pressure sensor to malfunction. If any tire sealant is visible when the tire is lowered, replace the sensor. Also remove any remaining sealant fluid from the inside of the tire and the surface of the wheel.

Transfer

1. Lift the vehicle on a suitable support. Remove the tire/wheel assembly from the vehicle;

2. Remove the tire from the wheel following the tire changer manufacturer’s instructions;

3. Remove the TORX screw from the tire pressure sensor and pull it straight from the tire pressure valve stem. (See Figure 1.)

4. Remove the tire pressure valve stem by pulling it through the rim.

Installation

NOTE: When servicing the tire pressure sensor, always use new TORX screws during installation:

1. Attach the tire pressure sensor to the valve stem and install the new TORX screw. The tire pressure valve and TORX screw are used only once;

2. Apply tire soap on the rubber part of the valve stem;

3. Using the tire valve stem mounting tool, pull the valve stem in a direction parallel to the valve hole on the rim;

4. Attach the tire to the rim, and;

5. Install the tire on the wheel. Install the tire/wheel assembly on the vehicle. And retrain the tire pressure sensor. (See RESET PROCEDURE.)

Information for this column comes from tire pressure monitoring system data in ProDemandR, Mitchell 1’s auto repair information software for domestic and imported vehicles. Headquartered in Poway, California, Mitchell 1 has been providing quality repair information solutions for the automotive industry since 1918. For more information, visit www.mitchell1.com. To read archived TPMS articles, visit www.moderntiredealer.com.

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