ABS accumulater may fail on Pontiac Bonneville

The anti-lock brake (ABS) accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard.)

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Average mileage: 153,000 (153,000–153,000)
3 model years affected: 1990, 1991, 1998
3 people reported this problem
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1998 Pontiac Bonneville 153,000 mi,
After changing brake lines problem started instantly