How to Repair the ABS on a Pontiac Grand Prix

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The ABS system on your Pontiac Grand Prix is a safety design that basically prevents your brakes from locking up under adverse driving conditions, like in the rain. Your ABS system is made up of four individual wheel sensors near your wheels. Wheel speed and other brake information relays from each individual sensor to your car's Powertrain Control Module. If an ABS sensor goes bad, you should replace rather than repair it.

Things You'll Need

  • Jack
  • Jack stand
  • Wrench set
  • Replacement ABS sensor
  • Bring your car to an auto parts store and allow them to run a free diagnostic test to tell you which ABS sensor is out.

  • Park your Grand Prix on a flat surface and engage the emergency brake. Jack up the wheel you will be replacing the ABS sensor on and set your jack stand in place. Set your vehicle on the jack stand.

  • Find the ABS sensor mounted on the inside of your wheel near the brake caliper. Remove its mounting bolt with your wrench set.

  • Lift the sensor and unplug the wiring harness plug from it. It will unplug by hand if you push in on the two plastic side tabs.

  • Plug the wiring plug into the back of your new replacement sensor.

  • Set your new sensor in place and insert the retaining bolt by hand. Tighten it by hand.

  • Jack up your Grand Prix a few inches, pull the jack stands out and then lower your Grand Prix down off the jack.

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References

  • "GM Century/Regal/Lumina/Monte Carlo/Cutlass Supreme/Grand Prix 1997-00 (Chilton's Total Car Care Repair Manual)"; Nichols-Chilton Editors;
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