Operating The Transmitter; Erasing Channels - Chevrolet 1999 Tahoe Owner's Manual

3. Decide which one of the three channels you want to
program. Using both hands, press the hand
transmitter button and the desired button on the
universal transmitter. Continue to hold both buttons
through Step 4.
4. Hold down both buttons until you see the red light
on the universal transmitter flash rapidly. The rapid
flashing, which could take up to 90 seconds,
indicates that the universal transmitter has been
programmed. Release both buttons once the light
starts flashing rapidly.
If you have trouble programming the universal
transmitter, make sure that you have followed the
directions exactly as described and that the battery in the
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hand held transmitter is not dead. If you still cannot
program it, rotate the hand
and try again. The universal transmitter may not work
with older garage door openers that do not meet current
Federal Consumer Safety Standards. If you cannot
program the transmitter after repeated attempts, consult
your GM dealer.
Be sure to keep the original hand
in case you need to erase and reprogram the
universal transmitter.
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held
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held transmitter end over end
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held transmitter

Operating the Transmitter

Press and hold the appropriate button on the universal
transmitter. The red light comes on while the signal is
being transmitted.
Note that the effective transmission range of the
universal transmitter may differ from the hand
transmitter and from one channel to another.

Erasing Channels

To erase all three programmed channels, hold down the
two outside buttons until the red light begins to flash.
Individual channels cannot be erased, but can be
reprogrammed using the procedure for programming the
transmitter explained earlier.
Training a Garage Opener with a "Rolling
Code" Feature
If you programmed the universal transmitter, but the
garage door will not open, and if your garage door
opener was manufactured after 1995, your garage door
may have a security feature that changes the "code" of
your garage door opener every time it is opened
or closed.
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held