All of a sudden, I received an error message for my air suspension when starting the truck. Suspension center module flashes erratically, cabin goes up, down repeatedly. Unable to change height settings. When put into reverse, drive, and step on accelerator, no movement. Appears the transmission isn't engaging. Checked suspension relay and fuses, all good after swapping with another 40A. No faults with suspension. Maintains balanced and equal height on all four sides. Suspension air does not run constantly even when turned off. Appears to be normal outside of error and flashing. But, cannot drive it. We reset the error code and also disabled battery. Same behavior. Any ideas? I replaced full TIPM earlier this year due to full shut down of electrical system. I am over this truck, typical once out of warranty. Help!