Truck sat for 1 week outside while on vacation. When starting in the morning the Air Bag Light is on, ABS light is on and speedometer does not work. Eventually the Air Bag and ABS lights go out and the speedometer begins to operate again. We have had very heavy dew in the morning so I'm thinking it may be moister related. lso this morning while driving I noticed the doors looked when everything started working again, so the auto door locks do not function when this is happening. Any help on where to start looking would be appreciated.
Thanks.