BUICK 643.GM4A16 Lh Rear Door Lock Actuator Wrnty 1YR

( Part Type: Actuator Door Lock ), ( Conditions Options: Lh Rear Door Lock Actuator ), ( Genuine Oem: Yes ), ( Ipn: 643.gm4a16 ), ( Manufacturer Warranty: 1 Year ), ( Partout Id: A-130647220 )

Review BUICK Lh Rear Door Lock Actuator Oem 1yr Wrnty fits ENCLAVE 2016

The **Buick 643.GM4A16 LH Rear Door Lock Actuator** is a precision-engineered component specifically designed for the **2016 Buick Enclave**, ensuring seamless operation of the left-hand (LH) rear door locking mechanism. This actuator is part of the vehicle s advanced power door lock system, which combines reliability with modern convenience, allowing drivers and passengers to effortlessly lock or unlock doors via keyless entry, remote controls, or manual switches. Crafted from high-quality materials, this actuator features a durable **plastic housing** reinforced with robust internal components, including a **DC electric motor** and a **gear-driven mechanism**, which work in tandem to smoothly engage and disengage the door latch with minimal effort. The design incorporates a **sealed bearing assembly** to reduce friction and wear, ensuring long-term performance even under frequent use. Compatible with the **2016 Buick Enclave s factory wiring harness**, this actuator is engineered to integrate flawlessly with the vehicle s electronic control module (ECM), providing consistent and reliable operation while maintaining the integrity of the door s structural integrity. Backed by a **one-year limited warranty**, this part is a direct factory replacement, guaranteeing compatibility with OEM standards and offering peace of mind for owners seeking to restore or upgrade their vehicle s door lock functionality. Whether replacing a worn-out actuator or addressing a malfunction in the rear door locking system, this component delivers the precision and durability expected from General Motors engineering excellence.

**Pros and Cons of buying a Buick 643.GM4A16 LH Rear Door Lock Actuator (2016 Enclave, 1-Year Warranty)**

1. **Direct Fitment** The part is specifically designed for the 2016 Buick Enclave, ensuring compatibility without modifications. This reduces the risk of installation issues or improper function.

2. **OEM Quality** As a genuine or high-quality aftermarket replacement, it should meet or exceed the original equipment manufacturer s standards in durability and performance. This helps maintain the vehicle s reliability.

3. **Warranty Coverage** The inclusion of a 1-year warranty provides some assurance against defects in materials or workmanship. This can offer peace of mind, especially if the part fails prematurely.

4. **Ease of Installation** Many aftermarket parts, including this actuator, are designed for straightforward replacement. The 643.GM4A16 model is likely a plug-and-play solution, requiring minimal tools and technical skill.

5. **Cost-Effective Alternative** Purchasing the part directly (rather than through a dealership) can be significantly cheaper than labor costs associated with professional installation. This makes it a budget-friendly option for DIYers.

6. **Prevents Further Damage** A faulty door lock actuator can cause wear on the wiring harness, door seals, or other components. Replacing it promptly can prevent secondary issues and extend the lifespan of related parts.

7. **Improved Functionality** A non-functional door lock actuator can be inconvenient, leading to frustration or even safety concerns (e.g., inability to lock/unlock doors remotely). Replacing it restores proper operation.

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1. **Potential Counterfeit Risk** If purchasing from an unverified seller, there is a risk of receiving a low-quality or fake part. This could result in premature failure or poor performance, voiding any warranty claims.

2. **DIY Installation Challenges** While many actuators are straightforward to replace, wiring or mechanical complexities (e.g., sensor alignment, ground connections) may pose difficulties for inexperienced DIYers. Mistakes could lead to further damage or electrical issues.

3. **Limited Warranty Duration** A 1-year warranty is relatively short, especially if the part is expected to last the lifetime of the vehicle. If the part fails after the warranty expires, replacement costs may fall entirely on the buyer.

4. **Compatibility Concerns** Even if the part is listed as a direct fit, slight variations in trim levels, software updates, or manufacturing differences could cause compatibility issues. Testing after installation may be necessary.

5. **Labor Costs if Professional Installation is Needed** If the buyer lacks the confidence or tools to install the part themselves, hiring a mechanic could offset the savings from buying the part outright. Labor costs for door lock actuator replacement typically range from $100 to $200.

6. **Electrical or Software Issues** In some cases, a new actuator may not communicate properly with the vehicle s control module due to software glitches or wiring issues. This could require additional troubleshooting or a visit to a dealership for reprogramming.

7. **Resale Impact** If the vehicle is sold in the future, a non-OEM replacement part might raise questions for potential buyers, potentially affecting resale value. However, this is usually negligible unless the buyer is selling the vehicle quickly.

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Buying the **Buick 643.GM4A16 LH Rear Door Lock Actuator** for a 2016 Enclave with a 1-year warranty is a practical choice for those seeking a cost-effective, direct-fit solution to restore door lock functionality. The part offers OEM-level quality (if sourced responsibly) and can prevent further complications from a failing actuator. However, buyers should weigh the potential risks of DIY installation, warranty limitations, and the possibility of counterfeit parts against the benefits.

- The buyer is comfortable with basic automotive repairs or has access to a mechanic.

- The part is purchased from a reputable seller (e.g., Amazon, RockAuto, or a trusted auto parts store) to avoid counterfeit risks.

- The warranty provides sufficient coverage for the expected lifespan of the part.

If the buyer is unsure about installation or lacks mechanical experience, it may be worth investing in professional installation to ensure proper function and avoid voiding any warranty.

**Final Recommendation:** Proceed with purchasing the **643.GM4A16 actuator** from a verified source and either install it yourself or have a trusted mechanic handle the replacement. This balances cost savings with reliability, provided due diligence is taken in sourcing and installation.

Details:

LEFT REAR LOCK ACTUATOR OEM 2016 BUICK ENCLAVE 1YR WRNTY: LH DOOR Included: Hassle-free 1 Year Warranty Our Part #: 10440989. Free shipping only applies to items you keep. If something is wrong with an order, we certainly do want to help you. Please compare part numbers BEFORE purchasing.

More Parts: 1 Year Warranty. Quality, Assured Parts All are Quality Tested Inspected. Very happy customer, excellent value and service. Please disregard other fitment charts they may not be correct.

Warranty HASSLE-FREE 1 YEAR WARRANTY: All parts are warrantied for a period of 12 months or year from the purchase date. Easy to find parts that don't require a mechanics knowledge. Image shown may be the vehicle from which part was pulled, or a generic image representing typical stock, rather than unique item being sold. Shipping Damage:: Damages and evidence of tampering on the outer packaging must be noted delivery receipt by driver.

Model: ENCLAVE.

specifications carlockiio:

• for models: Enclave
• for makes: Buick
• for years: 2016
• part type: Actuator Door Lock
• conditions options: Lh Rear Door Lock Actuator
• genuine oem: Yes
• ipn: 643.gm4a16
• manufacturer warranty: 1 Year
• partout id: A-130647220

shipping carlockiio:

• cost: $20.00
• class: Freight
• type: Fixed
• service: Flat Rate Freight

seller carlockiio:

• # reviews: 23670
• city: Rancho Cordova, California
• rating: 97.4%

offer carlockiio:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• sold: 0
• started: May 31, 2026
• quantity: 1

payments carlockiio:

• credit card: Visa
• wallet: Apple-pay
• other

returns carlockiio:

• time: 60 Days
• policy: Returns Accepted
• paid by: Buyer

general carlockiio:

• condition: Used
• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware

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