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.
Driver Door Module (DDM)
The DDM monitors the inputs and provides outputs and diagnostic information for the following multiple vehicle systems:
- Power door locks
- Power mirrors
- Remote keyless entry (RKE) system
The DDM monitors all of the door ajar switches hardwired to the module. This door ajar information is sent to the VDM using the standard corporate protocol (SCP) communication network. Diagnostic information is also retrieved from the DDM on the SCP communication network. The power door locks, power mirrors and the RKE system are all controlled by the DDM. If equipped with memory seats, the seat adjust switch provides inputs to the DDM, which sends this information to the DSM over the SCP network. If not equipped with a power luggage compartment lid, the DDM receives an input from the luggage compartment lid release switch and operates the luggage compartment lid release solenoid. If equipped with a power luggage compartment lid, the DDM sends a signal to the liftgate/trunk module (LTM), which will operate the luggage compartment lid release solenoid.
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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.