[Cutlerms]

Has anyone heard of an aftermarket module or anything to have the mirrors fold in automatically when you lock/unlock the car?

 

[JEdward]

I'm not aware of anything for the 2021 Trailblazer, but I assume it would need to replace most (if not all) of the side mirror architecture in order to include the motor since no model of the current TB has a power folding feature. I found some full-power folding side mirrors available after-market for some other vehicles, but they tend to be quite large (aimed at trucks for towing).