2023 Volvo VNL, rapid air loss

Hey, funny issue I've never experienced.

Just started yesterday at a stoplight.
I was getting ready to move after it turned green, and as soon as I started to press the accelerator, truck just started dumping air. I'm talking full loss of pressure in secondary, then primary, in about 10 seconds.
Applied brakes to truck and trailer, sat there to build pressure again. Released both brakes, and as soon as I pulled shifter to drive, it started dumping air again. Slid it into neutral, stopped dumping.
Put it back in drive, dump.
Found out that if I quickly put it in drive, and immediately applied the accelerator, it would quit dumping after I picked up couple mph, then would drive fine.
Come to a stop while in drive, it started dumping rapid again.

Kept doing that all night.
Shifted from occurring in drive only, to suddenly switching to when I go into reverse, and then back again after a couple occurances.

Eventually the truck started throwing an Antilock Brake Malfunction alarm.

Weird stuff. Any clues?