My abs light comes on when I turn left, garage says sensor needed replaced. on 1996 Pontiac Grand Am

Replaced sensor and it came on again, adjusted sensor, light came on again, also car has started to chug at times and rpms are lurching up and down, eventually it kicks in somehow and goes smoothly. Happens upon accelerating, epecially up hill.

Asked by for the 1996 Pontiac Grand Am
take it back to the shop. he made a wrong diag and repair and needs to do it right. there is no adjustment for the sensors.
ask him for the code it had.