GMC safari 2001 用户手册

This light should come on
when the tow/haul mode has
been selected.

For more information, see “Tow/Haul Mode” in 
the Index.

This light will come on
briefly when you are
starting the engine.

If the light comes on and stays on while you are driving,
check your various gages to see if they are in the
warning zones.