GMC 2000 Safari Owner's Manual page 22

5. Lift up on the left and the right seat release levers at
the same time. The latches are near the floor on the
rear legs of the seat.
1-10
6. Lift up on the rear of the seat to remove the seat
assembly from the rear latch pins. Then, pull back
and lift the seat out of the vehicle.
Your seat release latch lever is sprung with a
-
two stage mechanism. To fully release the latch, two
levels of lift effort will be required. First, a low effort
to overcome the first stage and then a moderate
effort to fully release the latch.