This product is a central control door lock actuator, a critical component of a vehicle's power door locking system. It functions as the electromechanical muscle that physically locks and unlocks the car door in response to signals from the key fob or interior switch. This specific model is designed as a direct replacement for certain Chevrolet and GMC models, ensuring compatibility and reliable performance.
The actuator works by converting electrical energy into mechanical motion. When it receives an electrical signal, a small motor inside drives a series of gears to move the locking mechanism, either engaging or disengaging the door lock. This particular unit is crucial for maintaining the convenience and security features of your vehicle.
Key Attributes & Specifications
Attribute
Details
OE Part Number
931-303, 15785123, 20783850
Compatible Brands
Chevrolet, GMC
Product Name
Door Lock Actuator / Central Control Lock
Type
Motor Assembly
Condition
Brand New
Place of Origin
China
Supplier
Shanghai Kunjue Auto Parts Co., Ltd.
Usage, Installation & Troubleshooting Guide
Typical Symptoms of a Failing Door Lock Actuator
Unresponsive Lock: The door does not lock or unlock when using the key fob or interior button.
Intermittent Operation: The lock works sporadically or only in certain conditions.
Unusual Noises: A grinding, whirring, or clicking sound is heard when attempting to operate the lock.
Partial Operation: The lock attempts to move but does not complete the locking or unlocking cycle.
General Installation Steps (For Reference Only)
Disclaimer: This is a general guide. The specific procedure varies by vehicle model. Consult a professional mechanic or a vehicle-specific repair manual before attempting installation.
Disconnect the Battery: Always disconnect the negative terminal of the vehicle's battery to prevent electrical shorts or shocks.
Remove Door Panel: Carefully remove the interior door panel by unscrewing fasteners and prying off clips. This provides access to the internal components.
Locate and Disconnect Old Actuator: Find the faulty actuator, disconnect its electrical connector, and unbolt it from the door latch mechanism or door frame.
Install New Actuator: Mount the new actuator in place and reconnect the electrical connector. Ensure all linkages are properly connected.
Reassemble Door: Reattach the door panel and reconnect the vehicle's battery.
Test Functionality: Test the new actuator multiple times using both the key fob and the interior switch to ensure proper operation.
Common Faults and Professional Repair Advice
If issues persist after installation, it may indicate a deeper problem:
Electrical Issues: Check for blown fuses related to the central locking system. Use a multimeter to test for power and ground at the actuator's connector.
Body Control Module (BCM) Fault: In modern vehicles, a malfunctioning BCM can prevent door locks from operating correctly, which may require professional diagnosis with specialized equipment.
Purchase Information
Quantity (Pieces)
Unit Price (USD)
3 - 19
$11.70
20 - 49
$11.04
50 - 99
$9.94
>= 100
$8.97
Packaging: Single item, packaged securely in a box (18x9.5x8.5 cm).
Weight: 0.550 kg (single gross weight).
Lead Time: Typically 15 days, negotiable for larger quantities.
After-sales Service & Support
Shanghai Kunjue Auto Parts Co., Ltd. stands behind its products. Buyers can expect the following support:
Order Protection: ajfpt.com provides secure payment processing and money-back protection if the product is not as described or fails to arrive.
Return Policy: Returns are typically accepted for defective or incorrect items. Buyers should contact the supplier directly to discuss specific return and warranty policies.
Supplier Communication: The supplier has a high response rate (typically within 2 hours) and can be contacted via 6688789's messaging system for technical questions or order inquiries.
Supplier Profile: Shanghai Kunjue Auto Parts Co., Ltd.
Business Type: Trading Company
Years on ajfpt.com: 1 Year (as of 2026)
Location: China
Performance Metrics: Maintains a 100% on-time delivery rate, indicating reliable logistics and order fulfillment.
Product Range: Specializes in a wide range of auto parts, including door locks, latches, and other body system components.
Frequently Asked Questions & Related Search Terms
Common Questions (FAQ)
Q: Is this actuator compatible with my specific vehicle? A: This actuator is designed to be compatible with certain Chevrolet and GMC models that use the OE part numbers 931-303, 15785123, or 20783850. Always verify compatibility using your vehicle's VIN and a trusted parts catalog before purchasing.
Q: Can I install this part myself? A: While it is possible for a skilled DIYer, door panel removal and actuator installation can be complex. It is recommended to have the installation performed by a qualified automotive technician to avoid damage to the door or its components.
Related Search Keywords
To find more information about this product and related services, users often search for the following terms:
