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.
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