Heck, even todayís generators will set a code and flash a set of numbers if it has issues, you should know this.
Todayís vehicles doesnít do that my 86 did, you need devices to try to trouble shoot.
You also might consider laying off the ether on the newer diesels since about 2003, itís not suggested.
Heck, you should know this as well.
2007.5 GMC Sierra 3500 SRW L.B."BLACK" C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe, DHD PCV Re-Route, AirDog 4G100
Castrol Hypuron/Vecton 15W40 synthetic blend oil
Donaldson 550832 2 qt oil filter
2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning