CAE1993

I thought it was just my truck that did this but it's good (I guess) to hear other people have the rattle too. Sounds like a license plate rattle to me.

beantown617

After inspecting my exhaust found out it is coming from a hold in the rear side if the muffler. It has started to rot through and rattles under low rpm ~1200 - 1400 rpm. Kinda glad its that and not something more expensive/ mechanical. Guess this is an excuse to cough up the dough for a new aftermarket exhaust.

lewissa81

Good to hear that you finally have it figured out!