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GMC-DMAX 05-10-2004, 10:41 PM I have a 04 GMC 6.6 Duramax, I would like to know where is the oil pressure sender port. I went to the GMC dealer today and they said it was on the left front side of the engine. I looked all over the engine and can't find. If someone knows this please reply. Thanks Mike L. 05-10-2004, 10:49 PM Left side of engine,about the middle, between pan and head. Just changed one. mike GMC-DMAX 05-11-2004, 08:48 AM Mike L. Thanks for the reply. Is this located like where a freeze plug would be, on the side of the engine. I think I might take off the skid plates to get a better look. Also if I find, I notice some of the other instruments, all have like a clip holding them tightly on. Also do you know the size socket that will fit or did you use a wrench to take it out. Thanks again | ||