Chevrolet 1979 Light Duty Truck Owner's Manual page 13

Front Seat Latch (Blazer)
The front passenger seat is equipped with a self-latching mechanism
to keep the seat latched in place. The latch release is located on the
right side of the seat. To tilt the seat forward push the seat latch
forward to raise the entire seat.
NOTICE:
When the seat is returned to the down position check that
it is latched before driving off.
Keep seat belt webbing and hardware clear of seat parts when you tilt
folding seats forward or backward. This helps prevent damage to these
belt systems.
Rear Seat (Suburba n)
If your vehicle is equipped with a folding second seat, either right or
left side may be folded to provide cargo space when needed.
To fold the seat:
1 . Release latch handle at outboard side of seat cushion and lift
rear of cushion (see illustration) to bring cushion to vertical
position behind front seat.
2.
Release latch handle at upper outboard side of seatback and
pull the back forward and down to floor level position.
3. Repeat steps
To return seat to passenger position, reverse the folding operation
bringing seatback and cushion into positions where the latches engage.
2
1 and to fold the other seat cushion and back.
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