Hummer 2009 H2 - Manual (Page 93)

To replace the battery:
1. Separate the transmitter with a flat, thin object
inserted into the notch on the side.
2. Remove the old battery. Do not use a metal object.
3. Insert the new battery, positive side facing down.
Replace with a CR2032 or equivalent battery.
4. Snap the transmitter back together.
Remote Vehicle Start
The remote start feature allows you to start the engine
from outside of the vehicle. It may also start up the
vehicle’s heating or air conditioning systems and rear
window defogger. Normal operation of the system
will return after the key is turned to the ON/RUN
position.
During a remote start, the climate control system
will default to a heating mode during colder outside
temperatures and a cooling mode during warmer
outside temperatures.
During a remote start, the rear window defogger
and heated mirrors, if equipped, will turn on during
colder outside temperatures and will shut off when
the key is turned to ON/RUN.
During a remote start, the heated seats will turn on
during colder outside temperatures and will shut
off when the key is turned to ON/RUN. See Heated
Seats on page 1-6 for additional information.
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