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Parts for GE DSKS433EB1WW Dryer - AppliancePartsPros.com

Yes it does sound like a motor problem.
It is overheating and tripping it's internal thermal protect. You then have to wait till the motor cools down and the protect resets befor it will restart.

Try turning the drum by hand. Should turn fairly easily. If not could be the drum is jammed for some reason and putting too much load on the motor.. You may want to try this on a couple other dryers to get a feel for it.
If it is difficult to turn run your fingers around the back and front of the tub to machine seal. To see if something has jammed between the tub and frame (bra wires are famous for this). Be careful in case the object is something sharp.
If nothing is jammed in there you will have to open it up and find the cause.

If it turns OK then I would replace the motor.

If you decide to do this you may as well also do an overhaul on it.
Check and replace the following as necessary:
the rear drum bearing.
the front drum support glides
the belt
the idler wheel
any bad internal seals
etc.

Unit looks pretty clean but I would also give the interior a good cleaning including the blower wheel.
this is also a good time to check/clean your vent system.