Hummer 2006 H2 Owner's Manual page 290

5. Hand-tighten the knob by turning it clockwise until it
is seated against the rocker panel protector bracket
and then tighten it to 10 lb ft (13.5 Y) with the
tool as shown.
4-36
This will help prevent the knob from coming completely
loose and falling out.
6. Once the knob is
torqued, install the
cotter pin through
the hole in the end
of the knob's
threaded shaft.