First check the following fuses: CJB #14 (10amp) #11 (7.5amp) PDB under hood # 3 (50amp) # 7 (30amp).
Next, verify the yellow ABS lamp lights up for about 3 seconds when the key is turned to Ignition 1 position.
Next, with the key off remove fuse 14 from the CJB and then turn key on. The yellow ABS lamp should light up and stay on (this will disable the ABS system). Drive around block and see if there is any change in operation. Turn key off and replace fuse.
Did you replace the front rotors? If so, did you ensure they had the ABS sensor ring? Ref. Click Link