Oldsmobile 2001 Silhouette Owner's Manual page 96

Replacing the Battery in the Remote Transmitter
NOTICE:
When replacing the battery, use care not to
touch any of the circuitry. Static from your
body transferred to these surfaces may damage
the transmitter.
1. Insert a flat object like a coin into the slot on the side
of the transmitter and twist it to separate the halves.
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2. Gently pry the battery out of the transmitter. Do not
use the metal flanges to "pop out" the battery.
3. Replace the battery.
4. Reassemble the transmitter. Make sure the halves are
snapped together tightly so water will not get in.
5. Check the transmitter operation.
Switchbanks
There are two sets of switchbanks located in the front
of the vehicle. The switches will vary with the options
that are on your vehicle. It is useful to become familiar
with them since they are used frequently while operating
the vehicle.