If you have corrosion like I did and it sounds like you do wires leading to the door switches need to be checked. The wire to my drivers side door actuator under the kick panel drivers side was totally gone. 2 inches of new wire and tape and I was back in business. Also does your dome light not work and seatbelt warning flash alot? if so spin the fuses as corrosion from the old aluminum fuses can mess things up. I bit the bullit and spent 15 dollars and got all new copper ended fuses and cleaned the contacts and lots of issues are gone.