Do I need to remove my old mirror housing to swap the glass?

No—this is a glass-only replacement. Your mirror housing stays mounted to the door. Pop or unclip the old lens from the housing and secure the new one using the factory attachment points.

What if the glass doesn't sit flush after installation?

Check that the housing itself isn't damaged or bent. The glass uses factory mounting points, so if the housing is true, the lens will seat properly. If the housing is warped, you'll need to address that separately.

Will this work if my mirror housing is a different year than the glass?

These are designed for 05-17 models in that generation. If your housing is from a different year or model, fitment is not guaranteed—verify your mirror housing matches the listed range before ordering.