Do I need to remove the whole mirror assembly to swap in the new glass?

You'll need to access the mirror body, but the glass itself is the only piece being replaced. Your existing housing and hardware stay in place — the new lens installs into the same mounting points.

Will this fit if my mirror has a heated element or turn signal?

This is the glass lens only. If your OEM mirror has integrated heating or lighting, confirm your mirror body is compatible with a replacement lens before ordering.

What's the return process if the fit isn't right?

Contact ModSupply customer service with photos of your mirror assembly and the lens. Returns are handled on a case-by-case basis — have your proof of purchase and truck details ready.