Cadillac 2006 CTS Owner's Manual page 343

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 on
page 5-71 and Tires on page 5-57.
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.
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