2009 Dodge Ram 1500 ST 8 Cyl 5.7L
Why is there a loud thumping sound from lower dash; even after engine off and key removed?
Less than 20k miles. I shut the engine off and the sound continued. I removed the key; opened the hood. I can hear the thumping outside behind engine but definitely louder in cab. Sounds like something is beating against something. I drove about 3 miles. It stopped after a mile and then started up again when I parked. Again, it continued for some time (30 sec) after engine shut off and key removed.
See service bulletin289046 and 289047 at this link http://www.automd.com/recall-tsb/search This has to do with the ac damper door or the programing ,electrical etc