GMC Sierra 2005 Owner's Manual page 125

Manual 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.
Some delay between shifting and when the indicator
light comes on is normal.
Recommended Transfer Case Settings
Driving Conditions
Normal
Severe
Extreme
Vehicle in Tow*
*See Recreational Vehicle Towing on page 4-63
or Towing Your Vehicle on page 4-63 for further
information.
A 4WD indicator light
comes on when you shift
into four-wheel drive
and the front axle engages.
See Four-Wheel-Drive
Light on page 3-47.
Transfer Case Settings
2H 4H 4L
YES
YES
YES
N
YES
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