GMC 2010 T-Series, Owner'S Manual

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Engine Overspeed Warning Light
If your vehicle has this
light, it will come on if
your engine is operating
at too many revolutions
per minute (rpm).
It will also come on for a moment as a check when you
start your engine.
If it comes on when you're driving, reduce your engine
speed immediately.
Engine Shutdown Warning Light
If your vehicle has the
engine shutdown feature,
this light will come on
when engine shutdown
is active.
See Engine Alarm and
Automatic Shutdown on
page 2
‑ 10 for more
information.
Exhaust Brake Indicator Light
For vehicles with an
exhaust brake, this light is
located above the climate
controls.
The exhaust brake indicator light will come on and
stay on whenever the diesel engine exhaust brake
or exhaust restrictor is active. For more information,
see
Diesel Engine Exhaust Brake on page 2 ‑ 16 .
Differential Lock Indicator Light
If your vehicle has this
feature, this light is
located in the center of
the instrument panel.
The light is on when the
inter-axle differential lock
system is in use.
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