2004 Pontiac Grand Prix ABS & Traction Control

Asked by Oct 15, 2016 at 12:25 PM about the 2004 Pontiac Grand Prix GT1

Question type: Maintenance & Repair

My 2004 Pontiac Grand Prix ABS & Traction Control
light comes on frequently. In addition, I hear and
feel a hydrolic-type feel/sound when turning. I took
it to two different mechanics. One states that I need
to replace all four Oxygen Sensors ($250). The other
states that I need to replace the ABS/Traction
control module ($1200). In fact, the second
mechanic states that my car doesn't even require
four Oxygen Sensors, but two (upstream &
downstream). I'm not mechanically inclined, at all.
Please help!!!

4 Answers

61,305

The oxygen sensors have absolutely nothing to do with the ABS or Traction Control System! The anti-lock brake system (ABS) and traction control system work together. When the computer finds a problem with either system both systems are disabled and both warning lights come on. The first thing to do is get another mechanic to scan the computer for trouble codes. The mechanic needs to have a scanner that can communicate with the ABS computer. Not all scan tools will. Then get the trouble codes and go from there. It's most likely a bad ABS wheel sensor. But the trouble codes will tell us for sure. HTH. -Jim

1 out of 1 people think this is helpful.
3,715

Good advice from Js. Also could be a bad wheel bearing. I've had that happen several times on various cars. Apparently there's enough play in a worn wheel bearing to disable the ABS and cause the system to attempt to reset itself which is the pulsing sound/feel you are getting when you turn sharply and at a low speed. If you're changing the bearing insist that it be a good quality American brand like SKF. It's more money, but if you buy the cheap ones you will likely be doing it again in about a year. Again I speak from experience.

2 out of 2 people think this is helpful.
10

Mine has the ABS system needing to be replaced, and my TCS and ABS lights are ON. Its your ABS System

1 out of 1 people think this is helpful.
3,715

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