Buick LaCrosse Owner's Manual page 288

Infrequent Usage: Remove the
12-volt battery black, negative ( )
cable from the battery to keep the
battery from running down.
Extended Storage: Remove the
12-volt battery black, negative ( )
cable from the battery or use a
battery trickle charger.
Remember to reconnect the battery
when ready to drive the vehicle.
Under normal driving conditions,
transfer case fluid does not require
changing or checking unless there
is a fluid leak or unusual noise.
If required, have the transfer case
serviced by your dealer.
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.
2. Firmly apply both the parking
brake and the regular brake.
See
.
Do not use the accelerator
pedal, and be ready to turn off
the engine immediately if it
starts.
3. Try to start the engine in each
gear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
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.