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Duramax First Generation: 2001-2004 (LB7) Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY. is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
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Old 04-17-2007, 01:00 PM   #1 (permalink)
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My Duramax is leaking antifreeze

Came out the other morning and while loading the truck for a trip to Seattle noticed something leaking from the truck. Got under the truck and looked up to see where the leak was coming from. With a light I could see antifreeze was leaking from somewhere up above the oil filter housing. I think it may be the blue hose that comes off the turbo but not sure at this time because I have not had time to check. The question I have if it is not the blue hose from the turbo, Where else should I look ?

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Old 04-17-2007, 02:20 PM   #2 (permalink)
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The blue hose from the turbo is the air hose to the intercooler. The notorious coolant leak near the turbo is the small hose that goes to the water outlet pipe. It sounds like your leak is probably where the oil cooler goes into the side of the block just above the oil filter assembly.

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