BUICK 16644818 Terraza Rear Left Power Sliding Motor 16644806

( Manufacturer Part Number: 16644818 ), ( Removed From: 2006 Buick Terraza Cx Sport Van 3.5l V6 Ohv 12v Automatic ), ( Genuine: Oem ), ( Fits: 2005-2007 Buick Terraza / 2005 2006 Chevrolet Uplander ), ( Custom Bundle: No ), ( Items Included: As Shown ), ( Placement On Vehicle: Left, Rear, Rear Left Door, Door ), ( Manufacturer Warranty: Other ), ( Features: Durable ), ( Id: E-a84493 C17 R-lr ), ( Color: Black ), ( Fitment Type: Direct Replacement ), ( Material: Steel ), ( Type: Door Lock Motor )

Review BUICK Terraza Rear Left Power Sliding Motor Oem fits 2005–2007

The **Buick 16644818 (2005 2007) Terraza Rear Left Power Sliding Door Motor (part number 16644806)** is a precision-engineered component designed to deliver smooth, reliable operation for the rear left sliding door mechanism on select Buick Terraza models produced between 2005 and 2007. This motor is a critical part of the vehicle s power sliding door system, ensuring effortless opening and closing with minimal effort from the driver or passenger. Built to Buick s stringent quality standards, this motor features a robust electric actuator paired with a durable gear mechanism, allowing for precise control and consistent performance even after extended use. The design incorporates a sealed housing to protect internal components from dust, moisture, and debris, which is essential for maintaining long-term functionality in varying environmental conditions. Whether installed in a standard Terraza or a variant equipped with sliding doors, this motor integrates seamlessly with the vehicle s electrical system, operating in tandem with the door s control switch and wiring harness to provide a responsive and user-friendly experience. For technicians performing repairs or replacements, this motor is a direct-fit solution, ensuring compatibility with the original door mechanism without the need for extensive modifications. Its reliability makes it an ideal choice for restoring or upgrading the functionality of a Terraza s rear sliding door, offering both convenience and durability for drivers and passengers alike.

Buying a **2005 2007 Buick Terraza rear left power sliding door motor (part numbers 16644818 and 16644806)** involves weighing several factors, including cost, availability, compatibility, and long-term reliability. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of purchasing a Part**

1. **Direct Compatibility**

- The part is specifically designed for the **2005 2007 Buick Terraza**, ensuring a perfect fit without modification. This reduces the risk of installation issues that may arise with aftermarket or generic replacements.

2. **OEM Quality**

- As an original equipment manufacturer (OEM) part, it meets Buick s original engineering standards, which typically means better durability and performance compared to non-OEM alternatives. This can lead to fewer premature failures and smoother operation.

3. **Warranty Coverage (If Purchased from Authorized Sources)**

- If you buy the part from an authorized Buick dealer, a reputable online marketplace, or a supplier with a warranty (e.g., RockAuto, AutoZone, or a manufacturer-backed seller), you may receive a limited warranty. This provides peace of mind in case the part fails shortly after installation.

4. **Easier Troubleshooting and Repairs**

- Since the part is genuine, diagnosing issues related to the sliding door mechanism will be simpler. Mechanics familiar with Buick vehicles are more likely to have experience with OEM components, reducing the time and cost of repairs.

5. **Resale Value of the Vehicle**

- If you re restoring or maintaining a classic or high-demand Buick Terraza, using OEM parts can enhance the vehicle s resale or collector value. Buyers often prefer vehicles with original or high-quality replacement parts.

6. **Consistency with Original Functionality**

- The motor and mechanism are designed to work seamlessly with the Terraza s electrical and mechanical systems. This minimizes the risk of compatibility issues that can arise with aftermarket parts, which may require additional wiring or adjustments.

7. **Potential Long-Term Cost Savings**

- While the upfront cost may be higher than aftermarket options, OEM parts often last longer and reduce the likelihood of needing frequent replacements. This can save money over time, especially if the part is critical to the vehicle s operation.

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### **Cons of purchasing a Part**

1. **Higher Upfront Cost**

- OEM parts are generally more expensive than aftermarket alternatives. For example, the **2005 2007 Buick Terraza rear left power sliding door motor** may cost significantly more than a generic or third-party replacement. Prices can range from **$150 to $300 **, depending on the source and condition.

2. **Limited Availability and Lead Times**

- OEM parts, especially for older or discontinued models like the Terraza, may not be readily available at local auto parts stores. You may need to order from online suppliers, which can result in longer shipping times (sometimes weeks). This delay can be problematic if the door motor is non-functional and the vehicle cannot be driven.

3. **Potential for Counterfeit or Low-Quality OEM Parts**

- When purchasing online, there is a risk of receiving a **counterfeit OEM part** or a "gray market" part that is not genuine. These parts may fail prematurely or not fit correctly. To mitigate this, always buy from reputable sellers (e.g., RockAuto, PartsGeek, or authorized Buick dealers) and verify the part s authenticity.

4. **Installation Complexity**

- While the part itself is designed to fit, the installation process may require disassembling the door panel, wiring, and testing the motor. If you re not mechanically inclined, you may need to pay for professional installation, adding to the total cost. Some buyers also report that the wiring harness or connectors may be fragile, requiring careful handling.

5. **No Guarantee of Original Condition**

- Even if the part is OEM, it may have been previously used or exposed to wear. Unless you purchase a **new OEM part** (which is rare for older models), there s no guarantee it hasn t been damaged or abused before. Inspecting the part for signs of wear (e.g., rust, bent components, or burnt wiring) is advisable.

6. **Potential for Additional Wear on Related Components**

- If the original motor failed due to wear on other parts (e.g., the door track, seals, or electrical connections), replacing just the motor may not fully resolve the issue. You might still experience problems if these components are degraded, requiring further repairs.

7. **Environmental and Ethical Concerns**

- OEM parts are often sourced from recycled vehicles, which can raise ethical concerns about how the parts were obtained (e.g., salvaged from accident vehicles). While this is not a dealbreaker for most buyers, it s worth considering if sustainability is a priority.

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### **Alternatives to Consider**

1. **Aftermarket Power Sliding Door Motors**

- Brands like **Dorman, Spectra, or ACDelco** offer aftermarket alternatives that are often cheaper (e.g., **$50 $120**) and may come with warranties. However, compatibility and longevity can vary, so research reviews and fitment guides carefully.

- *Pros*: Lower cost, wider availability.

- *Cons*: Risk of poor quality, potential fitment issues, and shorter lifespan.

2. **Used/OEM Salvage Parts**

- Purchasing a used motor from a junkyard or salvage yard can be much cheaper (e.g., **$30 $80**). However, you take on the risk of hidden damage or shorter remaining life.

- *Pros*: Very low cost.

- *Cons*: No warranty, risk of further issues, and potential for counterfeit parts.

3. **DIY Repairs or Modifications**

- If the motor is the only failing component, you might consider **rebuilding or repairing** the existing motor (if it s still partially functional) or replacing only the faulty subcomponents (e.g., the motor brushes or wiring).

- *Pros*: Cost-effective if you have mechanical skills.

- *Cons*: Time-consuming, may not resolve underlying issues.

4. **Manual Door Conversion**

- If the power sliding door is a frequent source of problems, converting the door to manual operation could be a long-term solution. This eliminates electrical failures but requires physical effort to open/close the door.

- *Pros*: Eliminates electrical issues, no more motor failures.

- *Cons*: Inconvenience, potential for wear on manual mechanisms.

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### **Conclusion**

Buying the **2005 2007 Buick Terraza rear left power sliding door motor (16644818/16644806)** as an OEM part is the **most reliable and long-term cost-effective choice** if:

- You prioritize **durability, compatibility, and ease of repair**.

- You can afford the higher upfront cost.

- You re purchasing from a **trusted source** (e.g., authorized dealer, reputable online retailer).

- The vehicle is a **restoration project or high-value collector s item**.

However, if you re on a **tight budget** or need a **quick fix**, aftermarket or used parts may be more practical. The decision ultimately depends on your **priorities, budget, and the vehicle s overall condition**.

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### **Recommendation**

- Purchase the **OEM part from a reputable supplier** (e.g., RockAuto, PartsGeek, or an authorized Buick dealer). Verify the part s authenticity and check for any included warranty.

- Consider **testing the motor** before installation (if possible) to ensure it operates smoothly.

- If installing yourself, follow the **Buick Terraza service manual** carefully and take your time to avoid damaging the door panel or wiring.

- Explore **aftermarket alternatives** (e.g., Dorman or Spectra) and read **customer reviews** to gauge quality.

- If buying used, **inspect the motor visually** for rust, burns, or physical damage before purchasing.

- If the motor is the only failing component, **compare the cost of replacement vs. converting to manual operation** for long-term savings.

- Use the **OEM part** to maintain authenticity and resale value, but be prepared for higher costs.

- Consider **upgrading related components** (e.g., door seals, tracks) to prevent future issues.

- Consult a **Buick specialist or mechanic** for advice on whether the OEM part is necessary or if a cheaper alternative will suffice.

- Check **forums like BuickTerraza.net or Reddit s r/Buick** for owner experiences with the part.

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### **Final Verdict**

For most buyers, the **OEM part is the best choice** if they can afford it, as it ensures reliability and compatibility. However, if the budget is limited and the motor is the only failing component, a **high-quality aftermarket part** may be a reasonable compromise. Always weigh the **cost, availability, and long-term implications** before making a decision

Details:

Fits, Make sure if this is the part you are looking for. 2005 2006 2007 BUICK TERRAZA REAR LEFT POWER SLIDING MOTOR, Part Number 16644806, Genuine OEM. Pre-Owned Part. Review all photos carefully to better assess cosmetic condition, 100% PERFECT WORKING ORDER.

Used items may show signs of wear. They are 100% original OEM products. Tested Quality. THANKS IN ADVANCE, Capitally.

part #: 16644818 prices

• $55.00-$64.99

specifications carlockiio:

• for makes: Buick
• for years: 2005-2007
• mpn: 16644818
• removed from: 2006 Buick Terraza Cx Sport Van 3.5l V6 Ohv 12v Automatic
• genuine: Oem
• fits: 2005-2007 Buick Terraza / 2005 2006 Chevrolet Uplander
• custom bundle: No
• items included: As Shown
• placement on vehicle: Left, Rear, Rear Left Door, Door
• manufacturer warranty: Other
• features: Durable
• id: E-a84493 C17 R-lr
• color: Black
• fitment type: Direct Replacement
• material: Steel
• type: Door Lock Motor

offer carlockiio:

• started: April 10, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0
• best offers: True

returns carlockiio:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

seller carlockiio:

• rating: 99.9%
• city: Columbus, Ohio
• # reviews: 28786

payments carlockiio:

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

shipping carlockiio:

• service: USPS Ground Advantage, UPS Ground Saver
• transit: 4-10 Days
• carrier: USPS, UPS
• cost: $0.00
• type: Fixed
• class: Standard, Economy

general carlockiio:

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

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