Connecting CDL3 to LS7-GMLAN

[EuroRace]

I sold a CDL3 to a customer with a LS7. We get most channels we need from OBD2 can line but can not find engine oil pressure. Has anyone connected to GMLAN to get oil pressure? Or do you know how to setup the address to receive additional channels? Any help or advice would be appreciated. I did find this oil pressure PID screen shot if that helps.