GMC 2002 Sierra - Manual (Page 194)

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Cruise Light (If Equipped)
United States Canada
The CRUISE light comes on whenever you set your
cruise control. See “Cruise Control” in the Index.
4WD Light (If Equipped)
The 4WD indicator will
light up when you shift a
manual transfer case into
four
- wheel drive and the
front axle engages.
Some delay between shifting and the indicator’s lighting
is normal.
See “Four - Wheel Drive” in the Index for
more information.
Tow/Haul Light
(Automatic Transmissions Only)
This message is displayed
when the tow/haul mode
has been activated.
For more information see, “Tow/Haul Mode” in
the Index.