2000 Dodge Dakota

Check to make sure the noise isn't the tail gate. Also, take a rubber mallot and tap on the exhaust. You may have a loose heat shield on the exhaust system or internally the resinator or catylatic converter could have come loose.

As far as the windows and locks, recheck the fuses and even if they look good, check them for continunity. They can look good but be bad. Finally, check under the hood in the power distribution box for blown fuses or bad relays.

Let me know what you find or if you have other questions.

Joe