My 2002 Cad. DeVille has been kept in perfect condition by the dealer where purchased new. Last three months it has been a very bumpy ride, mainly in the rear which shakes from side to side when i hit a bump. I had struts, shocks, alignment and tires checked. All ok.
aligned car anyway- no change
You may want to take a ride in the vehicle with a technician so that you can point out exactly when you experience this problem. It's hard to diagnose this type of problem without seeing the vehicle.
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〉 Answered on Mar 18th, 2009 by Suzanne Grego, Technician at City of Philadelphia Fleet Management