Chevrolet 2006 TrailBlazer EXT Owner's Manual page 18

Third Row Seat (Seven-Passenger)
To enter the third row seat, you must fold and tumble
the second row seat following the instructions given
previously.
If you are exiting the third row with no assistance, do
the following:
1. Pull the handle, located on the center of the second
row seatback, up to release the seatback and fold
the seatback forward.
Be sure to return the seat to the original position when
you are finished. Never use the third row as a seating
position while the second row is folded and tumbled.
1-12
2. Pull the back of the
seat lever, located on
the outboard side
of the seat and
indicated with the
number 2, to tumble
the seat forward.
To fold the third row seat, do the following:
1. Pull up on the handle located on the bottom of the
seat cushion to release the seat cushion.
2. Lift up the seat, and then pull it forward.
3. Fold the seatback forward until it is flat.
4. If the second row seat is also folded, unhook the
elastic loop, if equipped, on the back of the
seatback.
5. Fold the panel, if equipped, located on the back of
the seatback, to make a continuous surface to the
second row folded seat.