1999 Chevrolet Lumina • 120,000 miles

I need to replace the driver's side front wheel bearing assembly. After disconnecting the connector to the ABS sensor, do I also 'have to' unbolt it from the hub/wheel bearing assembly in order to remove the entire wheel bearing from the car. Or will it come out with it after just removing the 4 bearing mounting bolts? The sensor is mounted with 2 small fasteners that get threaded into wheel assembly itself and I cannot tell if they pass thru the knuckle/strut assembly, in which case I would have to remove them? They are badly corroded and it would be much simpler if I can remove/replace the entire assembly on the bench before reinstalling the new bearing assembly. (FYI - The wheel bearing assembly is held in with 4 bolts, not 3 and the flange has 2 tapped holes for the sensor).

Thank you in advance for your help!
October 29, 2012.

The sensor comes out with the bearing assembly. You don't have to remove the sensor first.

Oct 29, 2012.