I currently own 3 GM vehicles and reliability has been great, and 2 of those vehicles are 12 years old. I am also on my second GM electric car, I just crossed 80K miles and have had no issues with it. With Rivian, there is no track record for reliability, so I that remains a question mark.I love Rivian, but I'll take the truck I like the most regardless of brand. Hummer has some cool features, but with that price Rivian still wins for me hands down. Plus I'm hesitant to trust GMC. Reliability is huge for me.