Chevrolet B7 2001 Owner's Manual page 17

Fast Idle System (Electronically Controlled
R
Caterpillar Diesel and Gasoline Engines)
If your vehicle is equipped with an electronically
controlled diesel engine, it has both automatic and
manual fast idle capabilities.
Automatic Fast Idle System (Caterpillar
Engine Only)
The automatic fast idle feature will engage whenever
you start your vehicle and the engine is below the preset
operating temperature. This will help decrease engine
-
warm up time.
Idle speed will then return to normal under any of the
following conditions:
D
The engine reaches the preset operating temperature.
D
The brake pedal is pressed.
D
The trailer brake hand lever (if equipped) is applied.
D
The manual transmission clutch pedal is pressed or,
the automatic transmission (if equipped) is shifted
from NEUTRAL (N) or PARK (P).
D
The vehicle speed exceeds approximately
10 mph (16 km/h).
D
When the fast idle switch is pressed a second time.
1-10
Manual Fast Idle System (Caterpillar R Diesel and
Gasoline Engines)
R
Diesel
This system can be used to increase your engine idle
speed whenever the following conditions are met:
D
The brake pedal is not pressed.
D
The trailer brake hand lever (if equipped) is not applied.
D
The vehicle speed is below approximately 10 mph
(16 km/h) for vehicles with diesel engines. The
vehicle must not be moving and the accelerator must
not be pressed for vehicles with gasoline engines.
D
The manual transmission (if equipped) clutch
pedal is not pressed or, the automatic transmission
(if equipped) is in NEUTRAL (N).
The manual fast idle switch
is located on the lower
portion of the instrument
panel just to the left of the
steering wheel.