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#38: 12-22-2006, 01:58 PM
 
 mccorry
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Title: Mr. NiceGuy
Location: Grove City, Ohio
Car: 2005 LGT 5MT Stg. 2.5 / 69 Camaro RS/SS
Posts: 9,440
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Mine does it in a straight line... not while turning, Blue.... at 40MPH at 5000 RPM. The tires aren't spinning.

IMHO, It is a harmoic vibration that is coming through the floorboard... either a bushing that is less pliable at colder temperatures... or a rub. I am not sure which. My money is on stiff rubber bushings. The vibration of the drivetrain is getting passed right into the cabin due the the bushings being cold and stiff.