Side Mirror popped out on Pontiac vibe?

Answer 1

When putting the mirror and backing plate back onto the car you want to first set the positioners correctly. You want to make sure the positioners are attached to the motor first, do not try to have them attached to the backing plate and push them into the motor, they move around too much and you might damage one.

The positioners have rounded heads on them but they have little plastic ridges on two sides of the ball that have to be lined up with notches in the backing plate. The top one should have the ridges straight up and down and the left should be going left/right.

Put the backing plate against the center pivot and push it back onto the pivot ball until it snaps into place. You will need to put almost all the pressure on the center. If you push too much on either end you could flex the glass too much and crack it.

Once the center pivot is in place you work on snapping the positioners into their sockets. Push the mirror all the way to the left. It will push the positioner all the way down into the motor until it hits bottom then you can press on the area of glass directly over the positioner until it pops into it's socket. Then push the mirror back to center and then all the way up to pop the top positioner into place.