Dealing with ABS

[rapidtornado]

Advice needed!!!

It appears that my Sierra came fitted with ABS, rear disc set-up. Has anyone dealt with this before? Just wondered if you ditched the whole ABS system or if you kept it? I just can't see any reason why it would be required but don't want to sling it just in case I need parts of the system

Any help on the subject would be appreciated

Rapid