I have a 2003 Suburban LS with OEM-style replacement mirrors. The original factory mirrors were powered but not heated. When I replaced the original mirrors, I bought Powered and Heated mirrors even though I was repeatedly told the Heat function would not work since that wasn’t part of the original mirror features. Except they work perfect.

I’m thinking of replacing the mirrors again due to their age. Has anybody replaced the OEM powered-only mirrors and added the Signal feature? Will they absolutely not function since that wasn’t an original mirror feature? Or has anyone replaced their mirrors with the over-sized Towing Mirrors, Powered, Heated and Turn features on a Suburban that was only Powered?

Thank-you