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I am guessing here. Inspect the shocks for a broken one. Could also be a suspension part that is defective. You need to inspect the suspension, exhaust system, and brake system. Also look in the trunk to make sure womething is not loose and rooling around.

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โˆ™ 2005-05-16 02:30:15
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Q: What is wrong if 1999 DeVille makes a bumping sound when the brakes are applied?
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