The body control module (BCM) controls the automatic door locks. One of three BCM types is installed on this vehicle based on vehicle equipment:

The BCM type 2 has these automatic door lock features:

The BCM type 3 (RPO AU0) has these automatic door lock features (in addition to BCM type 2 features):

The BCM type 4 (RPO UA6) has this automatic door lock feature (in addition to BCM type 2 and 3 features):

For more information regarding the keyless entry system refer to KEYLESS ENTRY section; the content theft deterrent refer to THEFT DETERRENT SYSTEM section; and the BCM refer to BODY CONTROL MODULE section.

The BCM unlocks all doors when pressing UNLOCK once on either door lock switch. Note: the BCM does not unlock the doors when the content theft deterrence (RPO UA6) is armed.

Pressing UNLOCK on either door lock switch sends a ground signal to the BCM through CKT 194. This action cause the BCM to apply voltage in CKTs 694 and  294 for 350 (+/- 35) ms, energizing all door lock actuator motors and unlocking all vehicle doors. The BCM grounds door lock actuator motors through CKT 295.

Pressing LOCK on either door lock switch sends a ground signal to the BCM through CKT 195. When the BCM deems appropriate to lock the doors (based on last door closed locking and lockout prevention features) the BCM applies voltage to CKT 295 for 350 (+/- 35) ms, energizing all door lock actuator motors and locking all vehicle doors. The BCM grounds door lock actuator motors through CKT 294.

The BCM activates the last door closed locking feature when these conditions are met:

Upon pressing LOCK, the BCM to sound the chime 3 times. This provides feedback indicating that the last door closed locking feature is active, 5 (+/- 0.5) seconds after all doors are closed, the BCM locks all doors.

To cancel this feature:

To override this feature: Press LOCK twice. The BCM locks all doors immediately with a door still open.

The BCM does not lock the vehicle doors when pressing LOCK on either door lock switch with the lockout prevention feature active. The BCM activates the lockout prevention feature when these conditions are met:

When the lockout prevention feature is active, the BCM disables the automatic door lock features:

To override the lockout prevention feature, press and hold LOCK on door lock switch for three seconds or press LOCK on right front door lock switch twice. This action causes the BCM to lock all doors immediately.

The BCM unlocks the doors when these conditions are met:

The BCM unlocks the doors when these conditions are met:

The BCM locks the doors when these conditions are met:

The BCM initiates the sliding door delay locking feature when pressing lock on either door lock with a sliding door open, on one of these conditions is met:

In addition, the BCM initiates the sliding door delay locking feature when the shift out of PARK lock feature is active with a sliding door open.

When the sliding door delayed locking feature is initiated (see criteria above), the BCM locks all doors three seconds after closing sliding door(s). The BCM to apply voltage in CKT 295 for 350 (+/- 35) ms, energizing all door lock actuator motors and locking all vehicle doors. The BCM grounds door lock actuator motors through CKT 294.

The BCM locks all doors when pressing lock on either door lock switch or keyless entry transmitter during the three second delay period. This action overrides the sliding door delay locking feature. However, the BCM will not lock doors if the lockout prevention is active.

If a sliding door was open at the time the BCM locks all doors (override feature activated), the BCM initiates the sliding door delay locking feature after closing sliding door(s).

The BCM cancels the sliding door delay locking feature when pressing unlock on either door lock switch or keyless entry transmitter.

When opening a sliding door during the three second delay period, the BCM cancels the sliding door delay locking feature and waits for sliding door(s) to close again. When closing sliding door(s), the BCM re-initiates the sliding door delay locking feature.

When unlocking the left front, right front or liftgate door key cylinder, the BCM unlocks all vehicle doors while holding the key in the unlock position.

Unlocking door using key cylinder lock sends a ground signal to the BCM through CKT 781. Holding the key in the unlock position for one second causes the BCM to apply voltage in CKT 694 and CKT 294 for 350 (+/- 35) ms, energizing all door actuators and unlocking all vehicle doors.

When locking the left front, right front or liftgate door key cylinder, the BCM locks all vehicle doors.

Locking door using key cylinder lock sends a ground signal to the BCM through CKT 780. Holding the key in the lock position for one second causes the BCM to apply voltage in CKT 295 for 350 (+/- 35) ms, energizing all door actuators and locking all vehicle doors.

Illuminated Entry

The BCM turns on the courtesy lights when unlocking the left front, right front, or liftgate door using door cylinder lock (BCM type 4 only). Refer to Lighting System for more information.

Delayed Illumination

The delayed illumination feature is canceled when pressing LOCK on a door lock switch or a keyless entry transmitter. Refer to Lighting System for more information.