Hummer H2 2009 Owner's Manual page 18

Third Row Seat
Entering or Exiting the Third Row Seat
If the vehicle has a third row seat, it is intended for
two passengers and has only two designated seating
positions.
A second row split folding rear seat must be folded
down before entering or exiting the third row. See
"Folding the Seatbacks" under Split Folding Rear Seat
on page 1-11 earlier in this section for instructions.
The third row seatback can be folded and the entire seat
can be tilted or removed from the vehicle.
1-14
Folding the Seatback
To fold the seatback:
Notice: Folding a rear seat with the safety belts
still fastened may cause damage to the seat or the
safety belts. Always unbuckle the safety belts
and return them to their normal stowed position
before folding a rear seat.
1. Pull up on the release
lever labeled 1, located
on the rear of the
seatback, and push
the seatback forward.