Hummers: oil changes, oil change interval, gmc sierra


Question
Hi Mike;
        I hope that you dont get mad, but i have a question regarding a GM 6.5 litre turbo motor in my '97 GMC Sierra 2500 4 by 4. Today I bought my first diesel and have no clue on the maintenance of them.Since Hummers run the same powerplant i was hoping that you can answer a few questions for me. What is the oil change interval on a diesel? I heard long time ago that you can only change the filter more often than the oil itself.Also I kept hearing about fuel filter changes that they are very important. Where can i obtain a gm 6.5 diesel supplemental manual?

                      thank you
                        Tom S.

Answer
Hi Tom,

No problem.  The oil change interval is every 3000 miles.  The filter is replaced at that time too.  The fuel filter is replaced at every OTHER oil change.  Sorry, I don't know where you can get a manual.  Maybe from the dealer or a Haynes aftermarket book.  http://www.haynes.com/

Good luck,
Michael