Was changing the oil one evening. After filling up the oil I started the engine and inadvertently shut the door. As I was leaning against the front looking/listening to the engine I heard the doors lock... Key in the ignition and not remembering the key pad code I was happy that the door was not shut tight, and I got a metal hanger through the rubber seal and unlocked the door.

So what triggers the doors to lock?
Usually it's only but as soon as I put it into Drive and let go of the brakes, i.e. one would think a sensor on the gear selector and wheels triggers the event.

Anyway, now I never forget the key pad code

 

disable autolock:
The enable/disable mode allows the autolock feature to be turned off and on. On manual transmission vehicles, when replacing the remote anti-theft personality (RAP) module, the autolock feature must be turned off by using the enable/disable mode. The enable/disable mode is entered when the following series of steps is performed:

1. Confirm that the perimeter alarm is disarmed.

2. Close all doors.

3. Confirm that the ignition switch is in the OFF position. Note: Steps 4 through 8 must be performed within 30 seconds.

4. Turn the ignition switch from OFF to RUN.

5. Press the power door lock UNLOCK button three times.

6. Turn the ignition switch from RUN to OFF.

7. Press the power door lock UNLOCK button three times.

8. Turn the ignition switch from OFF to RUN.

9. Verify that the RAP module chirps the horn. This indicates that the RAP module is now in the enable/disable mode and ready to accept program changes.

10. Press the power door lock UNLOCK button one time to command the RAP module to toggle the autolock/relock feature ON or OFF.

11. Press the power door lock LOCK button once to enter the command.

12. Verify that the vehicle horn chirps one time to signal the RAP module confirmation of the command. There should only be one chirp indicating that the autolock/relock feature has been disabled. If one chirp is heard, followed by a longer honk, the autolock/relock feature has just been enabled. Return to step 10.

13. Turn the ignition switch to the OFF position to exit the enable/disable mode.

14. Verify that the RAP module chirps the horn once to indicate that a feature has been changed. The autolock and the appropriate alarm configuration are turned on at the factory on vehicles with automatic transmissions. Vehicles with manual transmissions have the autolock turned off at the factory. The RAP module returns to the prior setting any time battery power is interrupted.

 

not positive but i think when you push the brake and put it in drive, releasing the brake locks the door but only after a certain number of seconds. I might be wrong, but i've always casually noticed that the brake somehow triggers it.

 

Regarding Tim's reply:

Could they have made the process any more difficult?

A simple throwing of a single switch somewhere would have sufficed !!!!

 

Thx, guess I could disable the feature as I usually don't tend to open the doors going down the freeway.....

 

Thanks TIM!

Considering how I use the lightning these days this is a thorn in my side. It's down right aggrivating to move the truck a little when cleaning or waxing it, forgetting to unlock it, and then trying to open the pass side door.



Rich

 

Even if you did, the doors automatically unlock when you open the door from the inside anyway.