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Engine Idling
• Avoid prolonged engine idling. Long periods of idling may be harmful to your
engine because combustion chamber temperatures can drop so low that the fuel
may not burn completely.
• Incomplete combustion allows carbon and varnish to form on piston rings, engine
valves, and injector nozzles. Also, the unburned fuel can enter the crankcase,
diluting the oil and causing rapid wear to the engine.
• If the engine is allowed to idle, under some conditions the idle speed may increase
to 900 RPM then return to normal idle speed. This is normal operation.
WARNING!
Remember to disconnect the cord before driving. Damage to the 110–115 volt
electrical cord could cause electrocution.
DIESEL EXHAUST BRAKE (ENGINE BRAKING)
• The exhaust brake feature will only function when the driver presses the exhaust
brake switch.
• The switch is located on the switch bank below the audio system.
• Your vehicle is also equipped with the Smart Brake feature.
• This feature will automatically provide a variable amount of engine braking in an
attempt to maintain a constant vehicle speed.
• The Smart Brake is activated by pressing the exhaust brake switch twice. The first
press activate the full strength brake, second press activates the Smart Brake and
third press turns the brake off.
• The Smart Brake target vehicle speed is set when either the vehicle brake or the
throttle pedal is released.
• Exhaust braking is most effective when the engine RPM is higher.
NOTE:
For optimum braking power, it is recommended to use the exhaust brake while in
TOW/HAUL mode.
CAUTION!
Use of aftermarket exhaust brakes is not recommended and could lead to engine
damage.
DIESEL
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