We've had the same... did you try holding down the parking brake button for about 10 seconds? That does some sort of "reset" that released the brake for us.
Also had the calibration applied .... hasn't come back, so there's that.
2008 Acadia (78U Forever) SLT1 Blue/Gold Crystal Metallic - since retired.
2013 Cadillac SRX Luxury (his) - since retired.
2014 Buick Enclave AWD, White Frost Tricoat (hers) - since retired.
2017 Cadillac XT5 Platinum Edition, Crystal White Tricoat (his) - lease returned
2018 Buick Enclave Premium AWD, White Frost Tricoat (hers) - current
2019 Tesla Model 3 LR AWD, Pearl White Tricoat (his) - current