Oldsmobile 2003 Bravada Owner's Manual page 72

To replace the battery in the remote keyless entry
transmitter do the following:
1. Insert a thin coin in the slot between the covers
of
the transmitter housing. Gently pry the transmitter
apart.
2. Remove and replace the battery with a three-volt
CR2032 or equivalent battery, positive (+)
side down.
3. Align the covers and snap them together.
4. Check the operation of the transmitter.
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