This is a 2001 Astro Van with about 60k miles that is displaying
increasingly unreliable performance with the power door locks, power
windows and rear cargo door latch.

It started some time ago -- maybe as long ago as 18 months -- with the
rear cargo door latch. Basically, you'd have to push it two to four
times before it would successfully unlock the door. It would click, but
it was like it wouldn't move enough to totally unlatch it.

Then, the passenger side window stopped going down reliably. It will
move a few inches, then stop. If you wait several seconds and push the
button again, it will go down a bit more, etc. It appears that the
longer you wait between pushes, the more it goes down with each push,
but it never goes down more than a few inches at a time.

Finally, the power door locks stopped working for all doors. Like the
rear latch, you can hear stuff clicking in each door, but the locks
don't move enough to actually lock.

As for the rear cargo door, it also got worse as time went by and now
it won't open at all, no matter how much you fiddle with it.

There are no more problems with power accessories that I'm aware of.

All the fuses in the fuse box check OK.

My guess is all of this is related. I'm horrible about just living with
little problems until they become big problems.

Anyway, any ideas?

Thanks in advance.