My power windows, locks and mirrors don't work, also the information system only knows when the driver door is open not the other three. Anyone know what could be the problem. All doors seem to get twelve volts...

Check on the drivers door control module.

How do I check it? Power seems to go into it.

also keyless entry only unlocks drivers door, Any help would be great...

What year is your car? Adding that info to your signiture helps us by knowing what your driving.

Sorry I'm new to all this. it'* a 2000 Bonneville SSEI

Get with sawgunner, he should have that info for you. But it sounds like your DDM is acting up.

Thanks!

sounds like the DDM but you may also want to check for corrosion. do you have a wet floor on either or both sides of the car?

No nothing seems wet anywhere, (other than the trunk for some reason.) All the grounds to the switches seem to check out ok. other than the DDM is there a body control module as well?