1997 Yukon Anti Lock Brake problems

I have a 1997 GMC Yukon , when the roads are wet and I touch the brakes to hard the brakes start acting weird like the anti lock is going out to the point I dont have any brakes at all, they start pulsing and grabbing. This only happens when the road is wet. I had to replace the brake booster a few years ago and was wondering could this be realted to the booster or do I have an anti lock brake problem? Could other things like a mater cylinder going bad affect this also?

Thanks

The abs motor is designed to apply and release when it senses that the tires are skidding.

Change Your Front Hub Bearings Man, Theres Your Problem.
Expensive Fix But It Is The Fix.