On the 01-02 DMAX it uses the same oil pressure sending unit as the older 6.5's and such did, so that one was easy. The coolant temp sender for the guage was remote mounted to a tee between the engine and heater core as I couldn't find an easily accessible location to tap and put it into the block after I had it swapped in. Later model trucks run both through the ECM before the cluster, so you would have to add in both sending units if you retain your stock guages.
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, 3.42 gears, 261 T-case
Trans has a mild build with ALOT of help from MIKE L. which included ALTO's for C1-C4 and a PI ML converter
DIAMONDEYE 4" exhaust with a CORSA muffler, AFE stage 1 dry filter, EFILIVE, KENNEDY single pump and pump rub kit.