Chevrolet Suburban 2007 Owner's Manual page 27

Reclining Seatbacks
To recline the seatback, do the following:
1. Lift the lever located on the outboard side of
the seat.
2. Move the seatback to the desired position,
then release the lever to lock the seatback
in place.
3. Push and pull on the seatback to make sure it
is locked.
To return the seatback to an upright position, do
the following:
1. Lift the lever fully without applying pressure to
the seatback and the seatback will return to
the upright position.
CAUTION:
{
If the seatback is not locked, it could
move forward in a sudden stop or crash.
That could cause injury to the person
sitting there. Always push and pull on the
seatback to be sure it is locked.
2. Push and pull on the seatback to make sure it
is locked.
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