Hummer 2004 H2 Owner's Manual page 169

Traction Off Light
When this light is on, the system will not limit wheel
spin. Adjust your driving accordingly. See Traction
Control System (TCS) on page 4-9.
If the Traction Control System (TCS) detects that the
vehicle's brake's are overheating, the TCS will shut off
and the traction off light will come on. When the
brakes cool off, the TCS will turn back on automatically
and the traction off light will go out.
The traction off light will
come on when a traction
control system or anti-lock
brake system problem
has been detected.
The vehicle may need
service.
Engine Coolant Temperature Gage
United States
This gage shows the engine coolant temperature.
It also provides an indicator of how hard your vehicle is
working. During a majority of the operation, the gage
will read 210°F (100°C) or less. If you are pulling a load
or going up hills, it is normal for the temperature to
fluctuate and approach the 250°F (122°C) mark. If the
gage reaches the 260°F (125°C) mark, it indicates
that the cooling system is working beyond its capacity.
See Engine Overheating on page 5-27.
Canada
3-35