GMC 1999 Suburban Owner's Manual page 13

Easy Entry Seat (2-Door Utility)
CAUTION:
If any easy entry seat isn't locked, it can move. In
a sudden stop or crash, the person sitting there
could be injured. And, even if there is no crash or
sudden stop, a driver sitting in an unlocked easy
entry seat could be startled by the sudden
movement and hit the wrong control or pedal,
causing an accident. After you've used it, be sure
to push rearward on any easy entry seat to be
sure it is locked.
The driver and passenger front bucket seat and the 60/40
split bench seat of your vehicle have an easy entry
feature. This makes it easy to get in and out of the
rear seat. On vehicles equipped with the power driver's
seat, only the passenger's front seat will have the easy
entry feature.
When you do, the seat bottom will release. Just pull or
push the seat forward until it stops.
To return the seat to its regular position, return the
seatback to its upright position, then push the whole seat
rearward until it latches.
After returning the seat to its regular position, try to
move the seat with your body, to make sure the seat is
locked into place.
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To operate the seat, pull
forward on the top of the
lever located at the side of
the seatback, and tilt the
seatback forward toward
the front of the vehicle.
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