I have a friend that wanted some helping getting is LS swap in his 55 belair running. at first I found there was no spark and no injector pulse so I checked all grounds on the block and body they are good Im getting full voltage at the fuse box while cranking so I completed a VATS delete by going into the VCM editor processor and clicked disable VATS and still no spark or injector pulse. Watched data while cranking and there was RPM signal so I assume the crank sensor is working. The only code I am getting is a p0685. Am I missing something else I am suppose to do to get the vehicle started?