Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2002AVALANCHE 1500 2WD V8-5.3L VIN TREPAIR AND DIAGNOSISBODY AND FRAMEMIRRORSPOWER MIRROR CONTROL MODULESERVICE AND REPAIRMEMORY MIRROR MODULE (MMM) LEARN PROCEDURE
2002 Chevrolet Avalanche 1500 2WD V8-5.3L VIN T
Memory Mirror Module (MMM) Learn Procedure
2002 Chevrolet Avalanche 1500 2WD V8-5.3L VIN TSECTION Memory Mirror Module (MMM) Learn Procedure
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:
1. With a scan tool, select Memory Mirror Module
2. Select Special Functions
3. Select Output Controls
4. Select Mirror Relearn
5. 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.
1. With a scan tool, select Memory Mirror Module
2. Select Special Functions
3. Select Output Controls
4. Select Mirror Relearn
5. 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.