Cabin squeaking noise
About a couple of months ago, i noticed a squeaking sound when driving the car at low speed under acceleration, it is more prominent when going from stop to go. The sound seems to be coming from the back close to the brake light at the top or close to the C-pillar on the passenger side. I also noticed that the sound will be less prominent if under hot weather (i.e. the car under the strong sunlight for 2 hours plus). I suspect something is rubbing and when the car starts from stationary position, the motion causes the parts to rub against each other.
Is there anyone else experiencing this noise issue? Please share your experience and thank you in advance for your input and suggested remedy.