Chevrolet/GMC Silverado 1500 / Sierra/Sierra Denali 1500 Owner Manual
(GMNA-Localizing-MidEast-16515122) - 2023 - CRC - 8/12/22
226
Driving and Operating
This number is the highest gear that the
transmission will allow while operating in
L (Manual Mode). All gears below that
number are available. As driving conditions
change, the transmission can automatically
shift to lower gears. For example, when L5 is
selected, 1 (First) through 5 (Fifth) gears are
automatically shifted by the transmission,
but 6 (Sixth) cannot be used until the plus/
minus button on the shift lever is used to
change to the range.
In vehicles with gasoline engines, when the
shift lever is moved from D (Drive) to
L (Manual Mode), a downshift may occur.
The gear that the transmission is operating
in when the shift lever is moved from D
(Drive) to L (Manual Mode) determines if a
downshift occurs. See the following charts.
8-Speed Automatic Transmission
Gear before shifting
from D (Drive) to
L (Manual Mode)
8th
7th
6th
5th
4th
3rd
2nd
1st
Range after shifting
from D (Drive) to
L (Manual Mode)
–
Tow/Haul not engaged
L6
L6
L5
L4
L3
L3
L2
L1
Range after shifting
from D (Drive) to
L (Manual Mode)
–
Tow/Haul engaged
L6
L5
L4
L3
L3
L3
L2
L1