Subtle Squeal from underneath ??

Hey guys,

Have a 2016 Trail Premium and right around 800 miles I began noticing a very low volume but high pitch type squeal coming from under the vehicle. It occurs most prominently after the vehicle has sat over night or at least about 4 hours, only in gear and during very light acceleration between 10 and 20 mph. I'll add that its also while ascending a very slight grade. Once the vehicle has been driven around for a while (lets say about 5 - 10 miles) I never hear it again until the car sits for more that 4 hours.

Just curious if anyone else has experienced this noise or at least maybe knows what Im referring to.

Thank you for all your replies!