To add further to Johnny's comment, you would also follow the Engine out Procedure.
Not sure there is such a thing for a GA. In every company I've flown for, various Boeing types, SE GA = Standard GA route. The only variance was one airline had an SOP that if >MLW you followed the engine failure on takeoff route.
I had always been told that GA routes & gradients were designed for engine out cases. If there was anything untoward then advice was given. I remember ZRH RW14 was a place in question, considering % gradients before turns.