I just traded:02 3500 QC 6 speed SLT 4x4 for an 06 3500 QC 6 speed SLT 4x4,just wanting to know of anything I should do different as far as maintenance and what to expect from the HPCR. I had to put a VP44 on the 02 at 45000 and a fuel sending unit for the guage other than that just maintenance...