I received a restitution check from GM after signing a release of claim document. I this income going to be taxable?

GM had settled with me after having multiple issues with a car we owned. After trading the car in for another vehicle type, GM contacted me about setting up a restitution settlement. Provided documents as asked about the payments we made to GM financial, assuming settlement check we got was a return of payments we made on account. But before GM cut us a check.  I had to sign a release of claims document with a notary certification.