Memory Mirror Module (MMM) Learn Procedure
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The mirror relearn procedure, when initiated, commands the Memory Mirror Module (MMM) to control the driver and then the passenger mirror in the left, right, up and down directions. When commanding the mirrors the MMM also learns the direction of horizontal and vertical position sensor signal circuit feedback voltages. To initiate the relearn procedure, perform the following:
- With a scan tool, select Memory Mirror Module
- Select Special Functions
- Select Output Controls
- Select Mirror Relearn
- Then press the Reset button
If the mirror relearn procedure does not control the driver and passenger mirrors as described, there may be another fault in the mirror systems. Refer to Diagnostic System Check - Door Systems to begin the diagnosis of the mirror system.