I solved this problem by lubricating the track w/ a teflon based lubricant (TriFlow). I'm sure a shot of WD-40 would do the trick as well (if resistance on the track is causing your problem like in my case) but may not last as long.

I believe that this works because your battery voltage w/ the car running is 13.1v or above, when you turn the car off it is between 12.1 - 13.1v.

A small amount of resistance on the track may prevent the module from activating so as not to burn out the motor.

This worked for me, it's worth a shot before you go testing body control modules.

Good luck