Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
192
Driving and Operating
3. To exit, pull back on the shift
lever a second time. The D in
the shift pattern will illuminate
in red, and the M will switch to
white.
To enter Temporary Tap Shift Mode:
1. With transmission in D, Tap the
left steering wheel control to
downshift, and the right control
to upshift.
2. To shift to the lowest available
gear, press and hold the left
control.
3. To deactivate, hold the right
upshift control briefly.
After temporary tap shifts, automatic
shifts return after no manual shifts
have been done for seven to
10 seconds.
While using Tap Shift, the vehicle
will have firmer, quicker shifting.
This can be used for sport driving or
when climbing or descending hills,
to stay in gear longer, or to
downshift for more power or engine
braking.
The transmission will only allow
shifting into gears appropriate for
the vehicle speed and engine
revolutions per minute (rpm).
If shifting is prevented for any
reason, a SHIFT DENIED message
will be displayed in the instrument
cluster. The transmission will not
automatically shift to the next higher
gear if the engine rpm is too high.
It will only automatically shift to the
next lower gear if the engine rpm is
much too low.
Drive Systems
All-Wheel Drive
Vehicles with this feature always
send engine power to all four
wheels. It is fully automatic, and
adjusts itself as needed for road
conditions.
All-Wheel Drive (AWD) system
performance will be automatically
reduced when the compact spare
tire is in use. To restore full AWD
performance, and prevent excessive
wear to the AWD system, replace
the compact spare tire with a
full-size tire as soon as possible.
See