Chevrolet 2005 T-Series, Owner'S Manual

Page: 45 / 288

Manual High Idle System
If your vehicle has this
feature, the manual high
idle button is located in the
instrument panel. See
Instrument Panel Overview
on page 3-4 for more
information.
This system can be used to increase your engine idle
speed whenever the following conditions are met:
•
The brake pedal is not pressed.
•
The vehicle is at a complete stop.
•
The manual transmission clutch pedal is not
pressed or, the automatic transmission is in
NEUTRAL (N) or PARK (P).
The manual high idle feature is activated by pressing
the button on the instrument panel. When the button is
pressed again, or any of the previous conditions are
not met, manual high idle will be deactivated.
Exhaust Restrictor
If your vehicle is equipped with this feature, there is an
exhaust restrictor valve located in the exhaust stream.
The valve closes to provide back pressure to the engine
for the purpose of warming the engine quickly.
The exhaust restrictor operates:
•
while the engine is running
•
while the vehicle is not moving
•
while the accelerator, brake and clutch pedals are
not pressed on a manual transmission vehicle
•
while idling or driving in cold temperatures
•
when the shift lever is in NEUTRAL (N) or PARK (P)
on a automatic transmission vehicle
On vehicles equipped with a diesel engine exhaust
brake, the exhaust brake switch must be on. See Diesel
Engine Exhaust Brake on page 2-13 Diesel Engine
Exhaust Brake for more information. The indicator in the
exhaust brake switch will be lit when the exhaust
restrictor is active. The exhaust brake indicator light in
the center of the instrument panel will also be lit
whenever the exhaust restrictor is active. See Exhaust
Brake Indicator Light on page 3-35 Exhaust Brake
Indicator Light.
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