My car doors, especially the passenger side and the trunk occasionally
freeze up in winter, car is parked outside, I have no garage. Unlocking
them you feel them move so that is implying to me it is the rubber
seals, freezing to the metal, and I do not want to force it and pull or
damage the seals. Is there any that I can put on the rubber seals that
will stop this. (next time I can open them that is).

I usually spray silicone lubricant on a rag and wipe down the rubber seals.
Silicone won't hurt the rubber, but it does need to be reapplied every so
often.

I would not use other lubricants like WD40 as they may damage the rubber
seals over time.

You can also try washing and waxing the metal parts of the door that the
seals rest against.

Good luck!

Anthony Watson
www.watsondiy.com
www.mountainsoftware.com