1. Sunroof, Convertible & Hardtop Auto Parts For Sale
  2. sku: 15855352393941782
  3. BUICK ENCLAVE

BUICK 628.GM4A20 Rear Sunroof Moonroof Motor Wrnty Sunroof/moonroof 1YR

fits model: Enclave. make: Buick. year: 2020.

628.gm4a20 Buick Rear Sunroof/moonroof Motor Oem 2020 Enclave 1yr Wrnty

( Part Type: Motor ), ( Conditions Options: Rear Sunroof Motor ), ( Genuine Oem: Yes ), ( Ipn: 628.gm4a20 ), ( Warranty: 1 Year )

Review BUICK Rear Sunroof/moonroof Motor Oem 1yr Wrnty fits ENCLAVE 2020

The **Buick 628.GM4A20 Rear Sunroof/Moonroof Motor (2020 Enclave, 1-Year Warranty)** is a high-performance, factory-original electric actuator designed specifically for the rear sunroof/moonroof assembly of the 2020 Buick Enclave, ensuring seamless operation and premium functionality. Engineered with Buick s signature blend of durability and precision, this motor is built to deliver smooth, quiet, and reliable movement, allowing drivers and passengers to effortlessly control the sunroof s opening, closing, and tilting functions with the push of a button. Constructed from high-grade materials, including corrosion-resistant components and reinforced electrical connections, this motor is engineered to withstand the demands of daily use while maintaining optimal performance even in varying environmental conditions. The GM4A20 model features a robust internal gear system and a low-friction drive mechanism, minimizing wear and tear over time and reducing the risk of mechanical failure. Whether navigating city streets or cruising on the highway, this motor ensures a consistent, hassle-free experience, enhancing both convenience and comfort for all occupants. Backed by a **one-year limited warranty**, this genuine OEM part guarantees peace of mind, offering protection against defects in materials or workmanship. Ideal for replacement or upgrade projects, the 628.GM4A20 motor is a direct fit for the 2020 Buick Enclave s rear sunroof system, maintaining the vehicle s original functionality while upholding Buick s commitment to quality and craftsmanship.

**Pros and Cons of Buying a 2020 Buick Enclave with a Rear Sunroof/Moonroof Motor (GM Part # 628.GM4A20) and a 1-Year Warranty**

### **Pros**

1. **Functionality and Comfort** A rear sunroof/moonroof motor enhances the vehicle s interior by allowing natural light and fresh air to flow into the back seats, improving comfort for passengers. This is particularly useful for long drives or when traveling with children or pets.

2. **Resale Value and Appeal** A moonroof is a desirable feature that can make the Enclave more attractive to potential buyers if you decide to sell or trade it in later. It adds a premium feel to the vehicle, which may justify a slightly higher resale value.

3. **Versatility** The moonroof can be opened partially or fully, providing flexibility for ventilation without needing to roll down windows. This is especially beneficial in stop-and-go traffic or when driving in areas with poor air quality.

4. **Aesthetic Enhancement** The moonroof gives the Enclave a more upscale and modern appearance, which can be appealing if you prioritize styling and luxury features.

5. **Potential for DIY Repairs** If you have mechanical skills, replacing or repairing the moonroof motor yourself could save money compared to dealing with a dealership or mechanic. The part is relatively accessible, and many online resources provide guidance for installation.

6. **Warranty Coverage** The 1-year warranty on the part provides some peace of mind, ensuring that if the motor fails within the first year, it can be replaced or repaired without additional cost. This is particularly useful if you plan to drive the vehicle frequently or have concerns about the motor s reliability.

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### **Cons**

1. **Potential Reliability Issues** Moonroof motors, especially in older models or those with high mileage, can fail due to electrical issues, motor burnout, or mechanical wear. Even with a warranty, you may still face inconvenience if the motor malfunctions, and you might need to wait for repairs or replacements.

2. **Cost of Replacement** While the part itself may be reasonably priced, labor costs for installation can add up, especially if you re not comfortable doing it yourself. If the warranty expires, you ll be responsible for the full cost, which could range from $200 to $500 or more depending on the mechanic or dealership.

3. **Maintenance Requirements** Moonroofs require periodic maintenance, such as cleaning the tracks, checking the seals, and ensuring the motor operates smoothly. Neglecting these tasks can lead to leaks, dust accumulation, or motor failure over time.

4. **Limited Longevity** The lifespan of a moonroof motor can vary, but many last between 50,000 to 100,000 miles with proper care. If the motor is already nearing the end of its lifespan or has been previously repaired, it may not be a long-term solution.

5. **Potential for Leaks or Drafts** Over time, the seals around the moonroof can degrade, leading to leaks during rain or drafts when the roof is closed. This can reduce the comfort of the vehicle and may require additional sealing or replacement of gaskets.

6. **Dealer vs. Third-Party Parts** While the GM part (#628.GM4A20) is likely compatible, using aftermarket or non-GM parts could void warranties or lead to compatibility issues. Ensuring you get an authentic GM part is important for reliability.

7. **Installation Complexity** If you re not mechanically inclined, replacing the moonroof motor can be a challenging DIY project. Improper installation could lead to further damage or malfunction, potentially voiding the warranty if not done correctly.

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### **Ending Conclusion**

Buying a 2020 Buick Enclave with a rear sunroof/moonroof motor (GM #628.GM4A20) and a 1-year warranty can be a worthwhile investment if you prioritize comfort, versatility, and the vehicle s resale value. The moonroof adds a significant upgrade to the Enclave s interior, making it more enjoyable for daily use and long trips. The 1-year warranty provides a safety net, reducing the financial risk of immediate failure.

However, the long-term reliability of the moonroof motor is a concern, especially if the vehicle has high mileage or the motor has a history of issues. If you plan to keep the Enclave for an extended period, you may want to budget for potential future repairs or consider the motor s condition before purchasing. Additionally, if you re not comfortable with minor mechanical work, factor in the cost of professional installation or repairs after the warranty expires.

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### **Recommendation**

If you re looking for a **short-term or moderate-term solution** (e.g., 1 3 years) and you value the moonroof s functionality and aesthetic appeal, purchasing this part with the 1-year warranty is a reasonable choice. Ensure you:

- Verify the motor s condition (check for signs of wear, leaks, or electrical issues).

- Confirm compatibility with your specific Enclave model (some variations may require slight adjustments).

- Consider getting a professional inspection if the vehicle has high mileage or a history of moonroof problems.

If you re planning to keep the Enclave for **5 years**, weigh the potential long-term costs of moonroof maintenance against alternatives like a sunroof cover or other comfort features. Alternatively, if you re on a tight budget, you might explore used moonroof motors from trusted sources to save on upfront costs, though this removes the warranty protection.

For most buyers, the moonroof is a **desirable feature worth the investment**, provided you re prepared for potential future repairs. If you re confident in your ability to maintain or replace the motor as needed, this upgrade will enhance your Enclave s driving experience.

Details:

Please disregard other fitment charts they may not be correct. 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.

Please compare part numbers BEFORE purchasing. Model: ENCLAVE. Free shipping only applies to items you keep. More Parts: 1 Year Warranty.

Very happy customer, excellent value and service. Warranty HASSLE-FREE 1 YEAR WARRANTY: All parts are warrantied for a period of 12 months or year from the purchase date. Quality, Assured Parts All are Quality Tested Inspected. If something is wrong with an order, we certainly do want to help you.

REAR SUNROOF/MOONROOF MOTOR OEM 2020 BUICK ENCLAVE 1YR WRNTY: SUNROOF Included: Hassle-free 1 Year Warranty Our Part #: 8245754.

specifications sunroofconverti:

  • for models: Enclave
  • for makes: Buick
  • for years: 2020
  • part type: Motor
  • conditions options: Rear Sunroof Motor
  • genuine oem: Yes
  • ipn: 628.gm4a20
  • warranty: 1 Year

offer sunroofconverti:

  • best offers: True
  • options: Ship-to-home
  • started: February 18, 2026
  • quantity: 1
  • availability: In Stock
  • sold: 0

general sunroofconverti:

  • condition: Used
  • Exterior Parts Accessories > Roofs, Tops Sunroofs > Sunroofs Parts

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  • cost: $25.00
  • type: Fixed
  • service: Flat Rate Freight
  • class: Freight

returns sunroofconverti:

  • time: 60 Days
  • paid by: Buyer
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seller sunroofconverti:

  • rating: 97.1%
  • city: Rancho Cordova, California
  • # reviews: 22966
for models: enclave, for makes: buick, for years: 2020, part type: motor, conditions options: rear sunroof motor, genuine oem: yes, warranty: 1 year,
manufacturer: buick, category: auto parts > exterior parts accessories > roofs, tops sunroofs > sunroofs parts, sku: 15855352393941782,
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