ABS/Traction control problem with scanner codes

[ptnothere]

Hi all, was looking for some assistance.
My 02 GP GT has the following symptoms:
ABS light on, Trac Off light on. Sometimes feels like false firing ABS (grinding feeling through the brake pedal) usually while cornering at light speeds or going down slight hills. The lights are intermittent, sometimes when the car starts they're off but when I go over a bump or after the ABS false fires they come on and stay on until the car is turned off. Lately though they're on pretty much all the time.
Also, if I drive the car gently it doesn't make any noise while accelerating and turning but if I drive her aggressively around a corner then it'll make a whining noise while turning afterwards until the car is turned off and then shes fine again.

I replaced the front right hub with a Timken one about 3 months ago and it helped for a while but since then steadily worsened. The previous owner (about a year ago) said that GM had replaced the front left shortly before I bought it (yeah - I've definitely been stalling on fixing this issue)

Less than 4 months ago I replaced disks and pads all around along with doing the 12" brake upgrade using the stock calipers.

I finally took it to get scanned today and got the following codes:

C0035 Left Front Wheel Speed Sensor Circuit Malfunctioned
C0245 Wheel Speed Sensor Frequency Error
C0041 Right Front Wheel Speed Circuit Range Performance.

Any one got any tips on what to do next please??

 

[sseilmnop]

Sounds like wheel bearings again. I wouldn't expect Timken right to go bad but the left was replaced with something and it could have been a cheap China one. Check to make sure the wire on the right is not rubbing.

 

[Scottydoggs]

X2 on 2 new hubs, and maybe you need to re bleed the brakes to fix the abs pulsing. and the master cylinder.