GMC Jimmy 2004 Owner's Manual page 119

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.
With the garage door opener positioned properly and
the right number of pegs in place, you should only have
to press the button lightly to operate the opener.
Now, with the compartment
door closed, press the
button again to make sure
the garage door operates
properly.
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