Ran a diagnostic computer check and founf Code C1233 (RF wheel speed sensor open or shorted). Sounds a lot like a "bad ABS wiring harness". How difficult is it to replace the wiring harness, i.e., how far back to the engine assembly does the wiring harness extend from the RF wheel hub assembly ??
ABS Wiring Harness on 2003 Oldsmobile Alero
by RKovalak in North Royalton, OH on August 03, 2010
ANSWER by Visitor , August 12, 2010
a new front hub will remedy this problem. I have had the same code and problem. Wheel speed sensor is built into the hub and it cannot be replaced. The sensor has 2 wires that plug into a harness kind of inside the rotor area. The hub change is not hard if your mechanically inclined