GMC 2003 Sonoma Owner's Manual page 115

Press it firmly to the back of your garage door
opener, as close to the center of the opener
as possible.
3. Center the garage door opener activation button
over the console door button and press the opener
firmly into place.
2. Peel the protective
backing from the hook
and loop patch.
4. 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.
5. Add one peg at a time until the garage door opener
operates with the compartment door closed when
you press the button.
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