For cam sensor, just before start up spin the oil pump to prime all the lines, filter etc. Do it a couple times for 30 sec to a min each time. You feel the pressure build & reads out on the guage. Then insert cam sensor & key on engine off set it. Button everything up & of course double check all lines fittings hoses etc. Plugs on correct etc. Start up & run at 2200-2400 for 20 mins to break in the new cam unless your using a roller & then it doesnt need the 20 mins. Someone will say how the roller is done as I dont use one. After the 20 mins drain oil & filter (cut open) & inspect with a light & magnet. Dont forget the bottle of GM EOS on the first or all oil changes. I use it everytime myself. Have Fun!