I too have the "driver remote outside mirror" option, but not the original GM mirror. My re pop looks the same as yours. There is one small difference - the mirror does not stay adjusted. Close the door, and the mirror goes back to a neutral center setting. Hit a small bump, it returns to neutral. 'Have tried three different re pop mirrors (all different brands) and all will not hold adjustment. If yours stays adjusted, I'd say it's original. 'Not sure if there is GM identification if you remove the assembly.
