I recently bought a new vehicle (2019 Nissan Frontier) and I guess because I was not used to it I left the parking brake on and drove for about 6 km (3.7 miles) at about 50 to 60 km/h (31 to 37 mph). I noticed something was wrong when I heard a squeaking noise. I then quickly realized the parking brake was on, so I turned it off and found somewhere to park a couple of blocks away. When I got out I could smell the strong scent of burnt brakes.
I then left the vehicle to cool down for about 30 minutes while I went for a walk. When I came back I touched the rear alloy wheels and they were still surprising hot. I decided to wait another 15 minutes before driving again. Also before I drove I put the truck in neutral with the parking brake off and tried to manually roll it back and forth to check if the parking brake shoes had fused to the drum. I was able to push it back and forth, so I assume the parking brake had released.
I have since driven the truck a couple more times and when I am done I get out and touch the rear alloy wheels, they are nowhere near as warm as they were when I checked 30 minutes after the initial incident, so I doubt the parking break shoes are still rubbing the drum. However, it still smells like burnt brakes 12 hours after the incident, although not as bad. Is that normal and is it likely I have done permanent damage to anything?
I do not know if it is important but it seems my truck has rear disc brakes that have a drum brake in the center for the parking brake.
All help is appreciated.
EDIT: the squeaking stopped as soon as I disengaged the parking when I noticed it was on.