Chevrolet TRACKER 2003 Manual page 73

3. Read the instructions inside the case.
4. Put the two halves back together. Make sure the
cover is on tight so water won't get in.
5. Check the operation of the transmitter with your
vehicle. If the transmitter does not work, try
resynchronizing the transmitter with the receiver.
See "Resynchronization" following.
Resynchronization
Your remote keyless entry system is equipped with a
security system that prevents anyone from recording and
playing back your signal. The transmitter does not
send the same signal twice to the receiver. The receiver
will not respond to a signal that has been sent to it
more than once.
To resynchronize your transmitter and receiver, follow
these directions:
1. Stand close to your vehicle.
2. Press and hold the LOCK and UNLOCK buttons on
the transmitter at the same time.
3. Hold the buttons for at least seven seconds. During
this time, the doors should lock and unlock once.
This confirms the resynchronization. If the doors do
not lock and unlock, see your dealer for service.
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