Chevrolet 2004 Epica, Owner'S Manual, Page: 68 / 338

Battery Replacement
Under normal use, the battery in your remote keyless
entry transmitter should last about two years.
You can tell the battery is weak if the LED fails to
illuminate or if the transmitter will not work at the normal
range in any location. If you have to get close to your
vehicle before the transmitter works, it is probably
time to change the battery.
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.
To replace the battery in the remote keyless entry
transmitter, do the following:
1. Remove the screw from the back of the cover and
open the cover of the transmitter.
2. Pull the transmitter out of the cover and carefully
detach the sticker from the unit. Keep the sticker
clean.
3. Remove the battery and replace it with the new
one. Make sure the positive side of the battery
faces up. Use one three-volt, CR1620, or
equivalent, type battery.
4. Attach the sticker and put the transmitter unit in
the cover.
5. Put the two halves back together and replace the
screw. Make sure the cover is on tightly, so water
will not get in.
6. Test the transmitter operation.
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