ABS problems

[GWKP]

figured this was the best place to post this.
vehicle: 1998 chevrolet k1500 5.7L ecsb
problem:starting yesterday as i was braking as soon as i hit 10mph or less my brake pedal would pulsate and i kept hearing a noise sounded like a pump so after it pulsates i have to stomp the brake pedal to completely stop.

so i automatically thought it was a abs problem. im leaning toward the thought that i need a new abs(driver control) module. no codes set ,no abs light, and also no brake light on. and i have the right amount of fluid in the resevoir. maybe i have air in the system and need to bleed them? any advice or input would be great thanks

 

[95ukawn]

maybe you wanna try bleeding first since its free and easy. when i had abs problems my calipers would not open up they would stay closed and it ended up being the abs computer/module and when my brakes started pulsing i found out my rotors were warped

 

[GWKP]

yeah ill give that a try what is a sign of a failing module?

 

[GWKP]

just got done replacing both front hubs, old hub bearings were junk. problem solved!