The doors lock when put my key in the ignition and start the car. I do not want this to happen. I have the car set to lock when I put it in drive but it still locks when I start it. What can I do to change this?

I've had a strange issue with my drivers door the last week. I go out and unlock my door with wireless clicker. Then I reach in put the key in the ignition start the truck, make sure the defrost is on. Then I step away and slam the door, 'bump',,, I look back, the door did not click shut, again I slam the door 'bump'..it does not click shut. Bump Bump Bump...I try to shut it...then I reach in and push the lock/unlock button , lock/unlock...lock/unlock...on the door..click..click...it does beep or the horn toots..remember trucks key is in ignition , truck running, and I'm clicking the button on the inside of the door. Finally the door will shut and hold closed , once it was not locked,,,once it was shut and locked. I had to get my other set of keys to unlock the door.

Place key in ignition, put car in park, and turn the steering wheel right and left a few times. Try to start again.

someone told me to by getting out of the car and locking the driver door with the key, going to the front passenger door and unlocking, then relocking the door using the key. I have to repeat this step 2-4 times and eventually it will start. ?????????
This has nothing to do with it starting !

This is what's happening , Inside the lock cylinder are contacts that read the resistance of the pellet on the key , the contacts are getting worn out . You have two options , replace the lock cylinder or by-pass it all together .
The PASS-Key II® ignition key (1) contains a unique resistor pellet which is idenified by the Body Control Module (BCM) (2). There are 15 different key (resistor) codes. Only one ignition key resistor pellet code will work with each PASS-Key II® theft deterrent system.
Ignition Key Lock Cylinder
The ignition lock cylinder contains spring loaded contacts which make physical contact with the ignition key when it is inserted into the ignition lock cylinder. This allows the ignition lock cylinder to provide the Body Control Module (BCM) (2) with the resistor code embedded in the ignition key.

GM VATS Key Resistor Key Security Bypass
http://www.autopartswarehouse.com/sku/Buick/Century/Standard/Ignition_Lock_Cylinder/1999/SIUS222L.html?apwcid=bngpla

NOTE: If key buttons operated repeatedly while vehicle out of range or batteries replaced and system becomes inoperative, proceed as follows:
Press one of the buttons. Manually lock and unlock driver's door within 30 seconds. System should operate normally after approximately 1 minute.

Had the same problem, My issue had to do with the door locks? I guess the door locks are tied into the ignition for security purpose. I had to get out and close the door put the key in the drivers door, lock it and than unlock it (make sure all the door lock knobs go down and up) than it started right up.
Strange I know but it has to do with some type of security issue?

If the key is not coming out of the switch, it may be off, but you haven't turned it far enough back that final click to remove the key. Some have a button you have to depress to get the key switch to turn back that final click. That's it.

Yes, there is a way to reprogram your car to lock the doors when the gear selector is put into Drive.
Follow this site for a complete step by step re-program of the door locks:
http://www.nialtima.com/automatic_door_locks-113.html

I have an A4 and did this to re-program my key:

1. used the key to start the car...then turned it off
2. put the key in the driver door (door closed)
3. pressed the lock button on the key fob once
4. turned the key to lock the door.

This is basically the steps in the owners manual, but the car must be started with the key first, and the key must be in the door lock before pressing the lock button.

Sounds to me like the key FOB was swinging on the key change and hitting the column. What you are describling is the door locks cycling and not staying locked because the keys are in the ignition. To see what I mean try locking the doors with the keys in the ignition, they won't stay locked till the key is removed on newer vehicles.

I Have A Seville 1990, When That Happen To Me I Got The Inginion
Replaced Problem Solved. What Is Happening Is Your Key Has A Chip And That Chip Is A Resister And When The Valve Is Not Sented To The Computer It Disengages the Fuel Pump And Than Tells You To Wait. Soon All That Will Happen Is You Will Get The Wait 3 Mins And It Will Never Start, A Good Locksmith Can Take Care Of This For You And That Will Save You Some Money. Cause If You Go To The Dealer Ouch They Will Hit You Up. But I Asure This Is How It Will Happen Cause It Is How It Happen To Me
And Sorry There Is No By Passing The Computer