Sounds like the rear parking shoes are not adjusted properly. As for the spots on the rotors, that is sign of heat so we need to start with the parking brakes. Then you may just need to replace the rear brakes if they were not replaced.
Here is a guide that will help with this:
https://www.2carpros.com/articles/parking-brake-shoe-replacement
Below you will find the process from the manual which will help as well.
Please let us know if you have other questions. Thanks
Images (Click to make bigger)
SPONSORED LINKS
Wednesday, March 10th, 2021 AT 3:11 PM