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Regarding the squeeking sound going over bumps you more then likely need new sway bar links and upper strut mount bushings, regarding the vibration make sure your tires a good and balanced thats the most common cause of that issue . Now regarding the light issue this is a very odd issue you either has a issue with the comfort control module or you have a issue with the instrument cluster the first step you need to take is have the faults checked with a capable scan tool for that comfort module .
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