Replaced my differential bushings with poly bushings. The ones that were in there were old and cracked. I have rattle back there that I haven't been able to identify it. Thought I had it when I saw the cracks in the diff bushings. New ones didn't solve my problem. I'll be pulling the spare and riding in the back while my step son drives so I can see if I can isolate a location on the rattle(s).

Also replaced the thermostat. It threw a code indicating it had a short.

Since I have lots of time on my hands I'll probably go through and do a top to bottom, front to back detailing. Including the engine bay.