GMC 1995 Suburban Owner's Manual page 105

Four-wheel Drive
If your vehicle has four-wheel drive, you can send your engine's driving
power to all four wheels for extra traction. To get the most satisfaction out
of four-wheel drive, you must be familiar with its operation. Read the part
that follows before using four-wheel drive.
You
should use 2-WHEEL
HIGH (2H) for most normal driving conditions.
NOTICE:
Driving in the &WHEEL HIGH (4H) or &WHEEL LOW (4L)
positions for a long time on dry or wet pavement could shorten
the life of your vehicle's drivetrain.
NOTICE:
Changing your vehicle's body height can damage your vehicle's
suspension, drivetrain, or other vehicle components. It may also
affect the way your vehicle handles, and the function of your
vehicle's safety features. Do not change your vehicle's height
from the original design specifications.
Transfer Case
The transfer case shift
lever is on the floor to
the right of the driver.
Use this lever to shift
into and out of
four-wheel drive.
An indicator near the lever shows you the transfer case settings.
0
&WHEEL LOW (4L)
0
NEUTRAL (N)
0
2-WHEEL HIGH (2H)
4-WHEEL HIGH (4H)
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