Just a FYI but check your trany, transfer case, and motor mounts.

 

Read about the"thud" on another forum long ago and my '02 does the same thing. Seem that the more full the fuel tank is the more pronounced the thud? I think it has something to do with the baffling in the tank and nothing to worry about as far as I can tell. As far as the lights it was probably just a brain fart with the electronic controls since it hasn't happened again. Also the dash POP is probably just thermal expansion and contraction of the different materials in the interior. Don't worry so much and drive the thing. Every vehicle made has some quirk that can drive you nuts if you let it.

 

Yeah I stopped worrying. I noticed some exposed metal by my tail pipe so I bought some paint to cover it to keep rust away.