Initial phone interview with the hiring manager. Went over my resume, answered a few STAR (Situation, Task, Action, Result) questions, and had a few minutes for Q&A. I didn't hear back from GM for a few weeks so I figured they had moved on with another candidate. To my surprise they finally did call back and asked me to come in for a series of in-person interviews. Prior to coming in, I had to complete two personality tests and a critical thinking assessment. The critical thinking assessment is 18 questions and you only have 22 minutes to complete it. I was only able to get through 11 questions before time expired. My interviews lasted from ~7:45 in the morning to roughly ~1:00pm in the afternoon. In total I had five 45-minute interviews and also had to complete a case study. I had 1.5 hours to prepare for the case study after my first interview and then presented my findings to the hiring manager. The interviews themselves were pretty standard, again STAR based questions. All of my interviews were 1:1 - there were no panel interviews. HR was great to work with during the entire process. They even gave me a gift bag of GM treats when I was done with the interviews. I received a call back from GM the very next day with their decision to extend me an offer, which I am happy to say I will be accepting. End to end the process took roughly 1 month. This interview process is intense/challenging and is designed to weed out those individuals who don't really want the job.