Question about 1999 Pontiac Bonneville

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1999 Pontiac Bonneville SE 3800 ABS Brake pedal will eventually reach floor after stopping while hold car stopped. Brake pads replaced less than 5000 miles ago. Fluid level at max and does not drop. O

1999 Pontiac Bonneville SE 3800 ABS Brake pedal will eventually reach floor after stopping while hold car stopped. Brake pads replaced less than 5000 miles ago. Fluid level at max and does not drop. Original master cylinder and rear wheel cylinders, rebuilt front calipers both sides. No leaks at any of the wheels or the master cylinder. I've heard could be the ABS unit for air or obstruction but would like to keep from going to the dealer. Any ideas?

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  • Ray Keckeisen May 11, 2010

    when did this start, the final step in bleeding the car must be done with a scan tool capable of starting the ABS bleed part of the brake bleeding,get back to me if you need more help

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  • Master
  • 607 Answers

I would replace the MASTER CYLINDER. BLEED AIR from master cylinder BEFORE INSTALLATION. Hope this helps

Posted on May 18, 2009

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Posted on Jan 02, 2017

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