[align=left]Just purchased a used 2000 excursion v-10 limited with 74000 miles.The key fob works the two front door locks properly but the back doors and the tail gate glass does not work automatically. Any ideas on what I need to check and does the keyless system suppose to work back glass? I also have the code buttons on the driver door but do not know the code , I saw another post with same question but no answers[/align]

 

i also have a 2000 excursion. all the door locks and back gateworked with the keyfob and door code. i had my 4 doors quit working all at the same time, but the gate still worked. was told all 4 needed replaced. have not had a chance to take one out and check it. they all still click, but don't come up. my 5 digitcode was on a business size card in my manual. i will look around to see if i can find anything else.

 

Try and push the last number twice at the end and see if the rest of the doorsunlock

 

It is my guess, since working with electrical components at work, that if all of the door locks started giving trouble at the same time that they probably have one thing in common with each other and that would probably be a set of relay contacts. If the contacts get charred, dirty, or what ever, then they do not conduct enough current to pull the actuators in. Voltage will still show up at the actuators but if enough current can't get through the contacts then you will not have a strong enough electromagnet to work the actuators. It doesn't neccesarily have to be relay contacts, it could be where a fuse plugs in or any connection in the system that all the doors have in common. I wonder if anybody has hooked a battery straight to a faulty actuator to see if it worked?