How to change my abs sensor for my 99 Oldsmobile alero

looks like all 4 brakes need checked..

should be on the back aisle but if fitted with ABS then it is part of the sensors for ABS.

p0101 Oldsmobile MAF Sensor Signal Range/Performance
p0341 Oldsmobile Camshaft Position (CMP) Sensor Performance
p1404 Oldsmobile EGR Pintle Position
need to do full diagnosis to pin point mutiple codes cause one component can cause the computer to over compensate and throw up additional trouble codes

YEP BAD WHEEL BEARING WILL MAKE A ROARING LIKE NOISE WHILE IN MOTION.BAD WHEEL COULD PUT DRAG ON WHEEL WHICH CAUSE ABS LIGHT TO COME ON.YOUR WHEEL BEARING HAS THE WHEEL SPEED SENSOR BUILT INTO IT.SO IF WHEEL BEARING BAD THE WHEEL SPEED SENSOR PART OF ABS BRAKE SYSTEM WILL CAUSE ABS LIGHT TO COME ON IF WHEEL BEARING BAD.MAKE SURE FRONT BRAKE PADS INSTALLED CORRECTLY IF NOT. YOU WILL GET TERRIBLE WHEEL NOISE ALSO.

LOOK FOR ETS BUTTON ON THE CENTER OF THE CONSOLE.THE INDICATOR LIGHT WILL TURN OFF BUT LONG AS CURRENT NEED TO LIMIT WHEEL SPIN THE TRAC LIGHT WILL REMAIN ON.TAKE VECHICLE TO GARAGE OR DEALERSHIP.HAVE THEM SCAN THE ABS AND TRAC CONTROL SYSTEM.MOST OF THE TIME A BAD WHEEL SENSOR WILL SET OFF TRAC WARNING LIGHT.

MOST OF THE TIME WHEN TRAC LIGHT AND ABS BRAKE LIGHT COMES ON YOU A HAVE A PROBLEM IN THE ABS AND TRAC SYSTEM.THIS IS A DEALERSHIP FIX. YOU CAN CHECK ABS BRAKE FUSES MAKE SURE IT IS IN TIGHT.AND CHECK FOR FAULTY ABS RELAYS.TO CHECK RELAY LOOK AT RELAY TERMINALS YOU HAVE TERMINAL 86 AND TERMINAL 85.YOU CONNECT TERMINAL 85 TO GROUND AND TERMINAL 86 TO BATTERY POSITIVE TERMINAL.IF RELAY CLICKS WHEN BATTERY VOLTAGE IS APPLIED.RELAY IS WORKING IF YOU HEAR NO CLICK RELAY NO GOOD NEEDS REPLACING.

Remove the center (large)nut,,from the axle,then remove the brake caliper,and the bracket,then the rotor,and the outer tie rod end.Remove the three retaining bolts,from the bearing assembly,and unplug the abs sensor,that is it,reverse order to install.

intake manifold has a vacum leak or other vacum leak hose etc.

Hi, there I solved it myself turns out it was the driver front Abs sensor. the bearing had to be replaced because the Abs sensor is build into the bearing.