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Coffee addict
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Being rather new to diesels, I am puzzled on the fuel system of duramax. Is there fuel pump in the tank? Or is it suction? Do I have to worry about replacing it? Are they more reliable than gas fuel systems?
 

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there is no pump in the tank, the cp3 pump that the duramax uses is in the front of the truck run by the motor and sucks fuel from the tank. you can add a aftermarket fuel pump but its not required on a stock truck but helpful
 

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Diesel Junky
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the cp3 is more reliable as it is mechanical not electric:thumb
 

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Being rather new to diesels, I am puzzled on the fuel system of duramax. Is there fuel pump in the tank? Or is it suction? Do I have to worry about replacing it? Are they more reliable than gas fuel systems?
do a search on "Lift pump" on here and you should find plenty of info on aftermarket ones
 
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