I applied on GM workday website. Got HR screening call after 3 weeks since I submitted my application, and then he verbally confirmed that there will be a first round interview in the following week. Then I received the first interview invitation shortly after. The first round is technical and it is fairly easy consider I only have ~1 day to prepare. Basically a brief resume walk through, mainly focusing on Android projects I did in the past. Then some back to back Java and Android related questions. All questions are knowledge based (i.e. do you know what is XXX in Java/Android), no tricks. no algorithm challenges. Next, the same HR contact me ~3 days after the first round and told me there will be a final round. And I immediately got the interview invitation. The second round is pure behavioral. There are two interviewers and they first did a short resume walk through, and switched to behavior questions. They asked me specifically to follow the STAR format, and provide detailed examples for my answers. I immediately got the verbal offer the day after the second round, and got my official offer 1 week later. Then a criminal background check and that's it. Overall great and fast experience. All interviwers are friendly and the whole process is pleasant.