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.
Principles of Operation
The Driver Door Module (DDM) is on the Medium Speed Controller Area Network (MS-CAN) communication network. In order to support several vehicle subsystems, the module supports communications between various modules and also supports scan tool communications.
The DDM controls the driver memory power exterior mirror. This feature allows the driver to program personalized mirror positions. Once the driver stores a mirror position, the driver can recall the setting by pressing the corresponding memory switch or by using a programmed Remote Keyless Entry (RKE) transmitter. Refer to REAR VIEW MIRRORS . The DDM also controls the lock/unlock functions of the driver door lock actuator and receives lock/unlock input information from the door lock key cylinder switch and reset information from the driver door lock actuator on vehicles with memory.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.