parking sensors HUMMER H3 2009 Owners Manual

TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identication code. Any time
you replace one or more of the
TPMS sensors or rotate the
vehicle’s tires, the identication
codes need to be matched to the
new tire/wheel position. The sensors
are matched to the tire/wheel
positions in the following order:
driver side front tire, passenger side
front tire, passenger side rear
tire, and driver side rear tire using a
TPMS diagnostic tool. See your
dealer/retailer for service.
The TPMS sensors can also be
matched to each tire/wheel position
by increasing or decreasing the
tire’s air pressure. If increasing the
tire’s air pressure, do not exceed
the maximum ination pressure
indicated on the tire’s sidewall.
To let air-pressure out of a tire you
can use the pointed end of the
valve cap, a pencil-style air pressure
gage, or a key.You have one minute to match
the rst tire/wheel position,
and ve minutes overall, to match
all four tire/wheel positions. If it
takes longer than one minute, to
match the rst tire and wheel,
or more than ve minutes to match
all four tire and wheel positions,
the matching process stops and you
need to start over.
The TPMS sensor matching
procedure is outlined below:
1. Set the parking brake.
2. Turn the ignition switch to
ON/RUN with the engine off.
3. Turn the exterior lamp switch
from AUTO to OFF four times
within three seconds. A double
horn chirp will sound and
the TPMS low tire warning light
starts ashing. The double
horn chirp and ashing TPMS
warning light indicates the
TPMS matching process has
started. The TPMS warning
light should continue ashingthroughout the matching
procedure. The LOW TIRE
message displays on the Driver
Information Center (DIC).
4. Start with the driver side front tire.
5. Remove the valve cap from the
valve cap stem. Activate the
TPMS sensor by increasing or
decreasing the tire’s air pressure
for 10 seconds, then stop and
listen for a single horn chirp.
The single horn chirp should
sound within 15 seconds,
conrming that the sensor
identication code has been
matched to this tire and wheel
position. If you do not hear
the conrming single horn chirp,
turn the ignition switch to
LOCK and start over beginning
with Step 2.
6. Proceed to the passenger side
front tire, and repeat the
procedure in Step 5.
7. Proceed to the passenger side
rear tire, and repeat the
procedure in Step 5.
5-56 Service and Appearance Care