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Do not turn the key to the start position until the glow plug pre-heat indicator turns o. When the glow
plug pre-heat indicator turns o, turn the key to the start position and release the key as soon as the
engine starts. If the vehicle does not start aer the glow plug activation time ends, you may need to reset the glow
plugs by turning the key to the o position and back to run, in order to cycle the glow plugs again.
Aer the engine starts, allow it to idle for 15 seconds before driving in order to protect the engine.
Note: Make sure all auxiliary switches and interior lights are o before starting the vehicle.
Note: Do not press the accelerator during starting.
Note: Do not crank the engine for more than 10 seconds as starter damage may occur. If the engine fails to start, turn
the key to the o position and wait 30 seconds before attempting to start again.
Warning: Do not use starting uid, such as ether; in the air intake system (See air lter decal) such uid could
result in immediate explosive damage to the engine and possible personal injury.
Warning: Do not add gasoline, gasohol, alcohol, or kerosene to diesel fuel. is practice creates a serious re
hazard and causes engine performance problems.
Switching O the Engine (6.7L V8 Diesel)
Turn the ignition to the o position. To prolong engine life (especially aer extended high speed, high ambient
temperature, or high GVW/GCW operation, such as heavy loads or heavy trailers), it is recommended that a hot
engine be idled for 3-5 minutes. is allows the turbocharged engine to cool down. For more information on
GVW/GCW, see the Load Carrying chapter in your OEM Owner’s Manual.
Starting and Stopping (6.8L V10 Gasoline)
Read all starting instructions thoroughly before attempting to start the vehicle.
Before starting the engine on the vehicle make sure all occupants have fastened their seat belts. Make sure the head
lamps and electrical accessories are o. Apply the parking brake. Be sure the gearshi lever is in P (Park).
Turn the ignition key to the start position.
Aer the engine starts, allow it to idle for 15 seconds before driving in order to protect the engine.
Note: Make sure all auxiliary switches and interior lights are o before starting the vehicle.
Note: Do not press the accelerator during starting.
Note: Do not crank the engine for more than 10 seconds as starter damage may occur. If the engine fails to start, turn
the key to the o position and wait 30 seconds before attempting to start again.
Warning: Do not use starting uid, such as ether; in the air intake system such uid could result in immediate
explosive damage to the engine and possible personal injury.
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