During the LS1 swap, I changed the auto brake pedal with a manual brake pedal. I also bled the brakes at all four corners with the mityvac. I made sure that the reservoir is full of fluid, and all connection on the abs unit are intact.

Now, when i drive the car around the brake warning light stays on, and i almost have to press the brake pedal all the way down just to get the brakes to engage.

Any ideas?