2007 Chevy Impala 1LT
3.5L Flex Fuel 6 cyl engine
Note: All new struts and tires one year ago (approx 7,000 miles ago) after hitting raised pavement road hazard on interstate at 70 mph and bottoming out car. Entire suspension system was thoroughly examined for damage at the time and only struts, tires and one front wheel bearing needed repair/replacement. Also, just passed safety and emissions inspection about six weeks ago prior to this new creaking sound appearing.
PROBLEM: Since weather turned cold about two weeks ago, an intermittent “creaky door hinge” sound in the car rear end when driving over rough spots and to a lesser extent sometimes when turning. No noticeable change in how the car handles, rides, steers, brakes, etc. Just the creaky door hinge sound from somewhere in the rear end. No recent hitting of pot holes or other reason I can think of for why this has started other than the advent of cold weather. Pushing down hard on the trunk and trunk corners does not reproduce the sound, although I can’t really push down all that hard so that is no proof one way or the other.
Any suggestions what this might be? Dry bushing? Strut? Spring? Malevolent gremlins with pitchforks?
Please note, due to physical limitations, I cannot do much other than take this to the mechanic for diagnosis and fix. But I would appreciate feedback suggestions so I have a better idea of how serious this might be.
…still reading, still learning