2008 Aveo with multiple Lock/Alarm issues

[EAD15]

It sounds like your door lock actuator is going out. Or to be more specific, the part that senses the door lock position that is built into the actuator. The car monitors the position of the driver side door lock through the actuator (the driver door is the "master" sensor) and a failing actuator can cause many of your symptoms.

Please double check this, but the part number for your car should be 96252707. It's about a $30 USD part and fairly easy to replace.

The only hard part about replacing it is that it's tucked deep into the corner of the door below the outer door lock cylinder. As a result it's very difficult to see what you actually need to disconnect to get it out. If you have a borescope type camera, the job will be much easier