Karl, I have nothing from them regarding paperwork. They came to my machanic's shop (where I had it towed to) and reinstalled the mirror before I got there. As far as what they replaced, it was broken where the mirror attaches to the arm. When I got there, I first checked out the paint job and it looked good and was a good match (they also painted the arm) then I checked out the functions, it went up, down, right and left! The only way I felt to check the defrost mode was after turning it on, I checked the right and I felt it slightly warm to the touch and gave it the breath test! Didn't fog up! When I went to the drivers mirror, couldn't feel the warmth and I could fog it up on the breath test!