Chevrolet 2005 T-Series Owner's Manual page 51

CAUTION:
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It can be dangerous to get out of your vehicle
without the parking brake firmly set. Your
vehicle can roll. If you have left the engine
running, the vehicle can move suddenly.
You or others could be injured. To be sure
your vehicle will not move, even when you
are on fairly level ground, always set the
parking brake.
CAUTION:
{
Shifting into a drive gear while your engine is
running at high speed is dangerous. Unless
your foot is firmly on the brake pedal, your
vehicle could move very rapidly. You could
lose control and hit people or objects. Do not
shift into a drive gear while your engine is
running at high speed.
Overdrive Defeat
If your vehicle has this feature, you can select to limit
the transmission to fourth gear. This may be useful when
operating at a higher Gross Vehicle Weight (GVW) or
where operating conditions do not require fifth gear.
Press the button to turn on the overdrive defeat. Press
the button again to turn off the overdrive defeat.
The indicator light in the button will come on whenever
overdrive defeat is active.
The overdrive defeat button
is located in the instrument
panel to the right of the
steering column. See
Instrument Panel
Overview on page 3-4 for
more information.
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