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Re: 03 GMC Duramax coolant loss?
Posted to Technical Discussion Forum on 1/29/2015 1 Reply

Hi Mark,

Possible EGR cooler, injector sleeve? Check out TSB 03-06-02-005B. Seeing as this is a LB7, it's probably not the first rodeo with injectors. Who know what was done, or damaged in the process. :-) Login to read more.

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