I am getting a rear end groan when the car has been parked for a while, more than a day or two. It only happens when I put it in reverse and only briefly, less than a second or about 3-5 ft rolling backwards. No Noise at all when traveling forward or starting off forward. After the first time it does not repeat.
I drove the car all winter in the heavy Vermont salted roads on weekends only and parked it during the week. Caliper seizing?, rusty caliper pins or something worse like the viscous coupler?
All opinions welcome!
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