I checked for evidence of a water leak, but I don't see anything that looks like that is the case. I did spray the latches. In the past when the door switches would stick, the door ajar light would be on, but not this time.

76supercab, I responded to your post in the superduty section, but it looks like you answered my question here. Where is the VSM? Where should I buy it? Part number? Thanks guys.