GMC Sierra 2000, Owner'S Manual

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Up Shift Light (If Equipped)
This light is used on
some models with
manual transmissions.
The SHIFT indicator light will help you get the best fuel
economy. See “Shift Light” or “Shift Speeds” in this
section for more information.
Daytime Running Lamps Indicator Light
This light goes on whenever
the DRL are on.
When it begins to get dark, the DRL indicator light is a
reminder to turn on your headlamps.
Check Gages Light
This light will come on
briefly when you are
starting the engine.
If the light comes on and stays on while you are driving,
it could indicate a problem with your vehicle. It could be
a problem with your oil pressure, coolant temperature,
or some other problem. Check your various gages to see
if they are in the warning zones. If they are, have your
vehicle serviced right away.