GMC 2001 Sierra - Manual (Page 153)

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3. Center the garage door opener activation button over
the console door button, and press the opener firmly
into place.
The pegs inside the compartment door are used to
make sure the button on the compartment door will
contact the control button on the garage door opener.
4. Add one peg at a
time until, with the
compartment door
closed, the PUSH button
on the compartment
door will operate the
garage door opener.
5. Now, with the
compartment door
closed, press the button
marked PUSH again to
make sure the garage
door opener
operates properly.
With the garage door opener positioned properly and
the right number of pegs in place, you should only
have to press the PUSH button slightly to operate
the opener.
6. Adjust the position of the garage door opener and
add or remove pegs, as needed, until the opener
operates properly.