2003 gmc envoy keyless entry is locked and will not unlock with the key or the remote. it does lock - horn and lights illuminate. is it the remote or the car? I can't even unlock to pop the hood.

To arm content theft alarm.
1. Open the door.
2. Lock the door with the power door lock switch or
the remote keyless entry transmitter. The
SECURITY light should flash.
3. Close all doors. The SECURITY light should go off
after approximately 30 seconds. The alarm is not
armed until the SECURITY light goes off.

If a locked door is opened without the key or the remote keyless entry transmitter, the alarm will go off. The headlamps and parking lamps will flash for two minutes, and the horn will sound for 30 seconds, then will turn off to save the battery power.

The RKE is controlled by the SJB - smart junction box ! Fords BCM - body control module .
Principles of Operation
Power Locks
The SJB controls the power lock/unlock feature of all of the vehicle doors, including the liftgate, to lock or unlock based on the input received from the door lock control switch, the keyless entry keypad or the remote keyless entry (RKE) transmitter. Power locking and unlocking of the doors function independently of the key position, vehicle speed or transmission position. The smart junction box (SJB) activates internal relays to supply the correct voltage and grounds for the door lock actuators.

Your best bet would be to take to ford dealer or some other qualified repair shop .
Remote Keyless Entry (RKE) Transmitter Lock/Unlock Control - Unlock
The RKE transmitter feature provides lock/unlock functions independently of key position, vehicle speed, or transmission position. The RKE transmitter feature provides a 2-step process for unlocking the doors. Upon receipt of the first request for unlocking the doors, the RKE control feature requests the SJB to unlock the driver door only. If another unlock request is received within 3 seconds of the first, the RKE transmitter feature requests the SJB to unlock all the doors. This feature can be changed to global unlock, so that all the doors unlock on the first press of the unlock button. To toggle between the 2-step unlock and the global unlock press the lock and the unlock button on the RKE transmitter at the same time and hold the buttons for 4 seconds. The turn signal lamps flash to confirm that the feature has been toggled.
Remote Keyless Entry (RKE) Transmitter Lock/Unlock Control - Lock
The RKE transmitter feature requests that all the doors be locked when the lock button is pressed. On any press of the lock button with all doors closed, the SJB provides 1 flash of the parking lamps. If any door is ajar, no flash occurs. As soon as the last door is closed, the SJB provides the flash of the parking lamps. If 2 presses of the lock button are received within 3 seconds, the horn chirps once, and the parking lamps flash twice to indicate that all the doors are closed and locked. If any door is ajar when the second lock request is received within 3 seconds of the first, the RKE transmitter feature requests the SJB chirp the horn twice without flashing the parking lamps to indicate it locked all the doors but 1 or more doors are ajar. When the key is in the ON or START position, the parking lamp flashes and horn chirp confirmations do not occur.

All locks not working ?????

• The doors do not lock/unlock using the remote keyless entry (RKE) transmitter

• RKE transmitter battery
• RKE transmitter
• RKE transmitter programming
• Aftermarket system
• SJB

• Go To Pinpoint Test H .

The keyless entry system consists of the following components:

• driver door module (DDM)
• keyless entry transmitter
• keyless entry keypad

The driver door module (DDM) receives inputs from the digital transmission range (TR) sensor, ignition switch, brake switch, window/door lock switches, lighting control module (LCM), keyless entry keypad switch and remote transmitter. The DDM outputs consists of keyless entry keypad switch illumination, power door lock actuators, luggage compartment release solenoid, horn relay, and lighting control module (LCM).

• Battery junction box (BJB) fuses:
  • circuit breaker 7 (20A)
• Central junction box (CJB)
  • 4 (10A)
  • 6 (15A)
  • 8 (25A)
  • 13 (5A)
• Keyless entry keypad switch
• Power door lock actuator
• Luggage compartment release switch
• Luggage compartment release solenoid
• Connectors or connections
• Wiring harness
• If fuse's good have checked for DTC'S - diagnostic trouble codes .
• B1526 Keyless Entry Circuit Short to Ground DDM Go To Pinpoint Test E . B1553 Decklid Release Circuit Short to Battery DDM Go To Pinpoint Test B . B1751 Park/Neutral Switch Circuit Short to Battery DDM Go To Pinpoint Test K . B2425 Remote Keyless Entry Out of Synchronization DDM Go To Pinpoint Test L Need a professional grade scan tool to check fro these codes . Not a code reader for OBD2 codes .

• The doors do not lock/unlock using the remote transmitter

• Remote transmitter not programmed.
• Remote transmitter.
• DDM.

• Go To Pinpoint Test F .

Did you program the new key fob ?

Remote Transmitter Programming NOTE: All remote transmitters are programmable and must be set at the same time.

1. Turn the key from OFF to RUN four times within three seconds, ending in RUN. The locks will then lock and unlock, confirming program mode has been entered.

1. Press any button on each remote transmitter to be programmed. The doors will lock and unlock to confirm that each remote transmitter has been programmed.

1. If additonal remote transmitters are to be programmed, repeat Step 3 within 7.5 seconds or steps 2 and 3 if more than 7.5 seconds have elapsed.

1. To exit program mode, turn the ignition to START or wait 7.5 seconds.

1. NOTE: Failure to wait at least 20 seconds will cause programming failures. Wait at least 20 seconds after turning the key to OFF or after the last remote transmitter has been programmed to activate a remote transmitter for testing or verification

The vehicle horns are activated under the following conditions:
?€¢
The horn switch is depressed.

?€¢
The body control module (BCM) commands the horns on. The BCM commands the horns on under either of the following conditions:

-
When the content theft deterrent system detects a vehicle intrusion. For further information, refer to Content Theft Deterrent (CTD) Description and Operation in Theft Deterrent.

-
When the panic button is depressed on the remote control door lock transmitter. For further information, refer to Keyless Entry System Description and Operation in Keyless Entry.

-
When the OnStar?® system is used to sound the horns, if equipped. For further information, refer to OnStar Description and Operation in Cellular Communications.

-
When the keyless entry system is used to lock the vehicle, a horn chirp may sound to notify the driver that the vehicle has been locked. The notification feature may be enabled or disabled through personalization. For further information, refer to Keyless Entry System Description and Operation in Keyless Entry

The horn chirp can be disable by pressing the lock and unlock buttons simultaneously until the hazard lights flash, and no enable press the lock and unlock until the horn chirp.
To reprogram (enter new ID) key fob (keyless remote controller) follow the steps.
1. Close all doors and lock all doors
2. Insert and remove the key from the ignition key cylinder more than six times within 10 seconds. (The hazard warning lamp will then flash.) NOTE: Key should be withdrawn from ignition key cylinder completely each time.
NOTE: Do not rush the insertion/removal key cycling process. The side marker/tail/license lamps and interior illumination will flash twice when this step is accurately completed.
3. Insert key on ignition key cylinder and turn ignition key switch to "AAC" position At this time, the new ID code is entered and original (previous) ID codes are erase.
4. Press any button on the new remote controller once. (The hazard warning lamp will then flash)
NOTE: Do not press the button more than one time in the above step. If the button is pressed more than one time, the programming procedure will not be successful. The side marker/tail/license lamps and interior illumination will flash twice when this step is accurately completed and programming is successful.
If there is only one remote controller skip step 5.
5. Additional ID code entry Release the door lock, then lock again with door lock/unlock switch (In power window main switch)
6. Remove key from ignition
7. Unlock driver side door, open driver side door and then close the door. (END)

does the key pad light when you press a button at night? If yes, the fuse is ok.
Do you have the plastic card with the permanent code in your owner manual packet? If yes, tryit.
report back.

Keyless Entry The keyless entry keypad is hardwired to the GEM. The GEM interprets the inputs from the keyless entry keypad and then controls the associated operation. The keyless entry keypad will be illuminated for five seconds when any button is pressed. Additionally, it will request the illuminated entry feature to turn the courtesy lamps on. If a lock all doors code is entered, the illumination will turn off, as well as request the illuminated entry feature to turn off the courtesy lamps. When pressed, the keyless entry keypad supplies the ground signal to the GEM or the GEM receives a signal from the keyless entry remote transmitter. Then the GEM outputs a ground signal to the appropriate lock or unlock relay which supplies the power to the actuator to lock or unlocks all doors, including the luggage compartment. The keyless entry remote transmitter also unlocks the liftgate or activates the panic alarm by sending a signal to the GEM.
--------------------------------------------------------------- Visual Inspection Chart Mechanical Electrical

• Keyless entry keypad
• Keyless entry remote transmitter

• Central junction box (CJB) Fuse F222 (20A)
• Circuitry
• Generic electronic module (GEM)

------------------------------------------------------------------------

• No communication with generic electronic module (GEM)

• Generic electronic module.
• Circuitry.

• REFER to Section 419-10 .

------------------------------------------------------------------------------------

Call your local dealer and give the parts person your VIN # located on the dash on the drivers side and they will be able to tell you what your vehicle was equipped with.

Sounds like you need a new keyless entry box, but forst try resetting the computer, by taking the positive battery cable off for 10 mins.

If that does not work then seek geting the box for the keyless entry replaced.

To Program a new remote you must get in your vehicle, close all doors hold your unlock button down.while holding the button down turn your key on and off two times.at that time your locks will all cycle.Then with your keyless remote hold your lock and unlock buttons till the locks cycle .

the key you describe is for illuminating the locks and has no function for remote locking. You will need an aftermarket keyless entry kit to have remote locking. steve