GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234758) - 2016 - crc - 11/9/15
Driving and Operating
291
6-Speed Automatic Transmission
Gear before shifting from D
(Drive) to M (Manual Mode)
6th
5th
4th
3rd
2nd
1st
Range after shifting from D
(Drive) to M (Manual Mode)
M4
M4
M3
M2
M2
M1
8-Speed Automatic Transmission
Gear before
shifting from D
(Drive) to M
(Manual Mode)
8th
7th
6th
5th
4th
3rd
2nd
1st
Range after
shifting from
D (Drive) to
M (Manual Mode)
–
Tow/Haul not
engaged
M6
M6
M5
M4
M3
M3
M2
M1
Range after
shifting from
D (Drive) to
M (Manual Mode)
–
Tow/Haul
engaged
M6
M5
M4
M3
M3
M3
M2
M1
Grade Braking is not available when
Range Selection Mode is active.
See
Tow/Haul Mode
0
292
.
While using Range Selection Mode,
cruise control and the Tow/Haul
Mode can be used.
If the vehicle has an exhaust brake,
it can also be used, but will not
automatically downshift the
transmission. See
“
Exhaust Brake
”
in the Duramax diesel supplement.
Caution
Spinning the tires or holding the
vehicle in one place on a hill
using only the accelerator pedal
may damage the transmission.
The repair will not be covered by
the vehicle warranty. If you are
stuck, do not spin the tires. When
stopping on a hill, use the brakes
to hold the vehicle in place.
Low Traction Mode
If equipped, Low Traction Mode
assists in vehicle acceleration when
road conditions are slippery, such