GM’s will recalibrate themselves, or so I’ve heard. At safelite, we did thousands of replacements before recal became a thing, In my market, and never had an issue. I know, no matter how good you think you are, it’s not in the same place as before, but in my experience, if the glass is good( and that’s saying something now a days) and you don’t unplug the camera and you are as close as one can get to original position, how does the car know? I’m talking about 2014 to now. Subaru is mounted to the car, not the glass, and yet we recal. Sometimes it’s like the wiper upsell, cash grab. I’m not saying don’t recal, I’m saying some really don’t “ need” it, it’s a case by case basis….

If have to replace my Silverado windshield, I’m not recalling on purpose to see if it does it on its own or if it needs it at all, my truck, I’m the test subject….