Buick 2010 Lacrosse Owner's Manual page 312

When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be
sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Firmly apply the parking brake.
See
.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the engine off, turn the
ignition to ON/RUN, but do not
start the engine. Without
applying the regular brake, try to
move the shift lever out of
P (Park) with normal effort. If the
shift lever moves out of P (Park),
contact your dealer/retailer for
service.
While parked, and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
The ignition should turn to
LOCK/OFF only when the shift
lever is in P (Park).
With the key access ignition
system, the ignition key should
come out only in LOCK/OFF.
See
Contact your dealer/retailer if
service is required.
or
.