GM hires great talent in their treasury team and is a great place to build your career. Having said that the interview process is very technical. Expect to get asked detailed valuation questions as well as other corporate finance questions. One should prepare for this interview like a banking interview

Two phone interviews starting 1 hour apart from each other. One interviewer from the Treasury department and one from outside the Treasury department. No technical questions, although I suppose they definitely wanted to know what your impression of treasury work is.