Low Coolant Warning Light; Wait To Start Light - GMC 2010 T-Series Owner's Manual

Low Coolant Warning Light

The warning light should come on briefly, as a check,
when you turn on the ignition.
When it comes on, you will also hear a warning tone for
10 seconds. See Engine Coolant on page 5 26 and
have your vehicle serviced as soon as you can.
This light may also come on if your vehicle has the
automatic engine shutdown system and engine
shutdown has begun. See Engine Alarm and Automatic
Shutdown on page 2 10 for more information.
3-30
Your vehicle has a low
coolant warning light.
If this light comes on, the
system is low on coolant
and the engine may
overheat.

Wait to Start Light

Wait until the indicator turns off before turning the
ignition key to START.
When the temperature is below 0°C (32°F ), you should
wait no more than 10 seconds to start your vehicle.
See Ignition Positions on page 2 8 for more
information.
This indicator, in the left of
the instrument panel, will
come on when the glow
plugs are on and the
ignition key is in ON/RUN
or START.