Automatic Transfer Case - GMC 2005 Sierra 1500 Pickup Owner's Manual

Shifting In or Out of 4LO
Notice: Shifting the transfer case into 4LO while
moving at speeds faster than 3 mph (5 km/h)
may cause premature wear to the transfer case, and
may cause the gears to grind. To avoid causing
premature wear, and grinding the gears, do not shift
the transfer case into 4LO while the vehicle is
moving faster than 3 mph (5 km/h).
Shifts into 4LO can be made with the vehicle at a stop,
or while slowly rolling about 1 to 3 mph (2 to 5 km/h).
•
Shift the automatic transmission into NEUTRAL (N),
or with a manual transmission, press the clutch
pedal, or shift into NEUTRAL.
•
Shift the transfer case shift lever in one continuous
motion into the 4LO position.
•
When in 4LO do not drive faster than 45 mph.
This will reduce wear and extend the life of
your transfer case.
2-40
Shifting In or Out of NEUTRAL
1. With the vehicle running and the engine at an idle
set the parking brake.
2. Place the transmission into NEUTRAL (N).
Shift the transfer case in one continuous motion into or
out of the NEUTRAL (N) position.

Automatic Transfer Case

Use these switches to shift into and out of four-wheel
drive.
The transfer case buttons
are located to the left of
the instrument panel
cluster.