I didn’t have this issue last winter, but now that it’s been getting cold out in the mornings I noticed my drivers side door panel makes a frequent annoying creaking sound over each tiny bump in the road.

If I press and hold the panel in with my arm, the sound goes away. In the afternoons when it’s warmer out the sound doesn’t exist either.

Any ideas to fix?

 

Sounds like its just the plastic doors flexing a little here and there. You can try and tighten down all of the bolts/screws (really easy to do) a little and see if that helps. Or, maybe consider adding a layer of dynomat/hushmat/etc to the door. That would more than likley fix the issue as it'll add an extra layer to the door thus dampening it (if done correctly).

There's also a chance there's something loose behind the door that's moving just enough to cause the creaking but doing both of above should solve it.