Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
186
Driving and Operating
To enter Permanent Tap Shift Mode:
1. With the transmission in
D (Drive), pull back on the shift
lever to activate M (Manual
Mode). The M in the shift
pattern will illuminate in red,
and the D will switch to white.
2. Tap the left steering wheel
control to downshift, and the
right control to upshift. To shift
to the lowest available gear,
press and hold the left control.
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). The
transmission will not automatically
shift to the next lower gear if the
engine rpm is too high, nor to the
next higher gear when the maximum
engine rpm is reached.
If shifting is prevented for any
reason, a SHIFT DENIED message
will be displayed in the instrument
cluster.
When accelerating the vehicle from
a stop in snowy and icy conditions,
it is suggested to shift into second
gear. A higher gear allows the
vehicle to gain more traction on
slippery surfaces.