2006 Cadillac DTS Owner's Manual - Page 361

Resetting the TPMS Sensor Identification Codes Each TPMS sensor has a unique identification code. Any time you replace one or more of the TPMS sensors, rotate the vehicle's tires, or install a full-size spare that has a TPMS sensor, the sensor's identification codes will need to be matched to the new tire/wheel position. Each tire/wheel position is matched to the TPMS sensor using a TPMS diagnostic tool. See your GM dealer for service. The TPMS sensors may also be matched to each tire/wheel position by increasing or decreasing the tire's air pressure. When increasing the tire's air pressure, do not exceed the maximum tire pressure indicated on the tire's sidewall. You will have two minutes to match the first tire/wheel position, and five minutes overall, to match all four tire/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 TPMS matching process is outlined below: 1. Set the parking brake. 2. Turn the ignition switch to RUN with the engine off. 3. Press the Driver Information Center (DIC) vehicle information button until the RELEARN TIRE POSITIONS displays. 4. Press the set/reset button to allow the system to learn the tire positions. The horn will sound twice to indicate that the TPMS is ready, and then the message TIRE LEARNING ACTIVE will display. 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. 5-61