2005 Chevrolet Equinox • 6 cylinder AWD Automatic • 122,000 miles

I have a 2005 Chevy equinox all wheel drive, get a vibration that only starts at exactly 55 mph and goes away if you drop under 55 exactly, Checked tires, does not change with turning or acceleration
March 25, 2011.

This vehicle uses a center driveshaft support bearing (carrier bearing) on rear driveshaft that I have seen go bad and cause vibrations around that speed, worth a look, you would have to put it on a hoist and check that carrier bearing for falling apart, or coming apart from drive shaft.

Mar 25, 2011.