Chevrolet TRACKER 2003 Manual page 72

UNLOCK: The driver's door will unlock automatically
when the UNLOCK button on the transmitter is pressed.
If the UNLOCK button is pressed again within five
seconds, all remaining doors will be unlocked.
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.
Matching Transmitter@) to Your
Vehicle
Each remote keyless entry transmitter is coded to
prevent another transmitter from unlocking your vehicle.
If a transmitter is lost or stolen, a replacement can
be purchased through your dealer. Remember to bring
any remaining transmitters with you when you go to
your dealer. When the dealer matches the replacement
transmitter to your vehicle, any remaining transmitters
must also be matched. Once your dealer has coded the
new transmitter, the lost transmitter will not unlock
your vehicle. Each vehicle can have a maximum of two
transmitters matched to it.
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 transmitter won't
work at the normal range in any location. If you have
to get close to your vehicle before the transmitter works,
it's probably time to change the battery.
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To replace the battery in the transmitter do the following:
1. Use a coin or similar object to separate the
bottom half from the top half of the transmitter.
2. Remove the battery and replace it with the new
one. Make sure the positive side of the battery
faces down. For battery replacement, use a 3-volt
battery, type CR2032 or equivalent.
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