GM Service Manual Online
For 1990-2009 cars only

Without Memory

The inside rearview mirror can be manually adjusted by tilting the mirror.

With Memory

The inside rearview mirror contains two reversible DC motors and two position sensors. One motor adjusts the mirror to the UP/DOWN (vertical) position and the other motor adjusts the mirror to LEFT/RIGHT (horizontal) position. The driver memory seat module monitors the position sensors to determine the position of the mirror. The driver memory seat module stores the position of the mirror when a memory feature is requested.