I just purchased a 2003 trailblazer and the power lock buttons won't work correctly. one min. we think it is set and then it just locks and unlocks by its self ? we set it to lock when it is shifted in to gear, it works fine and then the next time we start the vehicle it won't do it ? I also can't get the interior lights to worck correctly they won't go off unless I use the manual override button! Could this be a wiring problem ?

The Headlamps On at Exit and Perimeter Lighting modes can be adjusted using the steering wheel controls to select the wanted function as displayed in the driver information center. The Headlamps On at Exit selection will allow the driver to customize the period of time that the headlamps remain illuminated upon exiting the vehicle. This period can be adjusted from 0 seconds to 180 seconds. The Perimeter Lighting feature allows the driver to select if they want the headlamps and backup lamps to illuminate when the door UNLOCK button on the key fob is activated. This feature can be turned ON or OFF by using the driver information center steering wheel control buttons.
programming Features with the Driver Information Center (DIC)
To enter programming with the driver information center (DIC), perform the following actions:
Turn the ignition to RUN.
Place the vehicle in PARK.
Press the Personalization button on the steering wheel to enter personalization programming.
Automatic Door Locks
Continue with the following steps in order to personalize the automatic door locks:
Press the Select button in order to enter the menu. The first choice seen is the current setting.
Press the Select button in order to scroll through the following options:
• LOCK DOORS: IN GEAR
• LOCK DOORS: WITH SPEED
Press the Personalization button in order to advance to the next option.
Press the Select button in order to enter the menu. The first choice seen is the current setting.
Press the Select button in order to scroll through the following options:
• UNLOCK DRIVER: IN PARK
• UNLOCK DOORS: IN PARK
• UNLOCK DOORS: AT KEY OUT
• UNLOCK DOORS: MANUALLY
Press the Personalization button in order to advance to the next option.
Remote Activation Verification
Continue with the following steps in order to personalize the remote activation verification feature:
Press the Select button in order to enter the menu. The first choice seen is the current setting.
Press the Select button in order to scroll through the following options:
• LOCK FEEDBACK: BOTH
• LOCK FEEDBACK: OFF
• LOCK FEEDBACK: HORN
• LOCK FEEDBACK: LAMPS
Press the Personalization button in order to advance to the next option.
Press the Select button in order to enter the menu. The first choice seen is the current setting.
Press the Select button in order to scroll through the following options:
• UNLOCK FEEDBACK: BOTH
• UNLOCK FEEDBACK: OFF
• UNLOCK FEEDBACK: HORN
• UNLOCK FEEDBACK: LAMPS
Press the Personalization button in order to advance to the next option.
Delayed Lighting
Continue with the following steps in order to personalize the delayed lighting feature:
Press the Select button in order to enter the menu. The first choice seen is the current setting.
Press the Select button in order to scroll through the following options:
• HEADLAMP DELAY: 10 SEC
• HEADLAMP DELAY: 20 SEC
• HEADLAMP DELAY: 40 SEC
• HEADLAMP DELAY: 1 MIN
• HEADLAMP DELAY: 2 MIN
• HEADLAMP DELAY: 3 MIN
• HEADLAMP DELAY: OFF
Press the Personalization button in order to advance to the next option.
Perimeter Lighting
Continue with the following steps in order to personalize the perimeter lighting:
Press the Select button in order to enter the menu. The first choice seen is the current setting.
Press the Select button in order to scroll through the following options:
• PERIMETER LIGHTS: OFF
• PERIMETER LIGHTS: ON
Press the Personalization button in order to advance to the next option.

Door locks don't reset. the work or the don't. If your talking about the fob. It has to be reset with a scanner.

All cars have two sets of key FOBs. Is your 2nd set in the house?

If the windows are down far enough to press the unlock button, can you also reach the door open handle? If so, reach in and open the door. (I must be missing something here).

Anyway, there are several videos on Youtube that show you how to open a locked car. Here are a few examples:
How to unlock your car in 30 seconds
Tricks to Unlocking Power Door When You Lock the Keys In Car Repair Tips
Car Opening

1. Close all doors
2. Insert key into ignition
3. Hold down the power UNLOCK button on the driver's door panel, continue to hold down
until instructed to release in step 9.
4. Perform steps 5 through 8 in a fairly rapid succession.
5. Turn the ignition to the ON position (as far as you can go without starting the engine.)
6. Turn the ignition to the OFF position.
7. Turn the ignition to the ON position (as far as you can go without starting the engine.)
8. Turn the ignition to the OFF position.
9. Release the power UNLOCK button on the door panel. The vehicle should respond by
door locks locking and unlocking automatically. (If locks do not cycle after you let go,
not before you let go of the unlock button, then the vehicle has not entered programming
mode and you must start procedure over. Remove key from ignition, open drivers door
and return to step 1 ). If the locks do cycle automatically then proceed to step 10.
10. Hold down the LOCK and UNLOCK buttons on the remote until the doors lock and
unlock. This may take up to 30 seconds.
11. Repeat step 10 NOW for each additional remote. (Including any existing remotes).
12. Turn the ignition to the ON position to exit the programming mode.
13. Test remote(s).

If the passkey is messed up, there will be a light on the dash that says security, or have a picture of a car with a lock thru it. If there is no light when the key is turned forward, then its NOT a passkey problem.

you have to have a special tool that will reach over the top of your door window and then down to hit either the window control or door locks control...you can buy these at any auto parts store but any wrecker driver has these tools and can get in in less than 5 mins... a "slim jim" will not work unless it is manual door locks (as opposed to electric)

https://www.clublexus.com/forums/rx-1st-gen-1999-2003/395765-driver-door-won-t-lock-or-unlock-using-key-transmitter.html

Synchronization
When
Key buttons operated repeatedly while vehicle out of range and system becomes inoperative. Key batteries replaced.
How - early models
Depress lock or unlock button. Manually lock and unlock driver's door within 30 seconds. System should operate normally after approximately 1 minute. If not, carry out programming procedure.
How - late models
If vehicle locked, manually unlock driver's door using key. Press key unlock button once. Switch ignition ON and OFF. Remove key from ignition switch. Press key lock or unlock button once. System should now operate correctly.

The key in the ignition unlock feature works when the vehicle is turned off, not in the running position. You should have a feature built into the radio that lets you go in and set features like your locks, lights etc. Look in the manual under the Radio section. I think you have to hold the lower left large button in to activate menu, but it is a little different on certain models. Some have a set button.

Hope this helps

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