If the ABS pump engages and the brake pedal presses further than usual and pumps soft and hard, engaging the antilock brakes, this video has a solution
How to repair,rebuild, fix, change, or replace a damaged, worn out, faulty or shorted power window switch on 00, 01, 02, 03, 04, 05, 06, Chevy Silverado or Suburban, GMC Sierra, or Cadillac Escalade.