01 Silverado 1/2 Ton Z71. This is an odd one that I have never experienced before, just looking for some ideas. When pulling in to a parking spot, I hit the brake pedal and the anti-locks start to pulsate. It has only happened when turning sharp to the left. I can't readily reproduce the problem. This only has happened twice but scares the living daylights out of you when there is a car sitting in front of you. Thanks in advance for any help.

 

it'll have to be scanned..a speed sensor is freaking out....there is a recall for some yankee trucks having corroded sensors