GMC TRUCK Lid Motor Down 640.GM9521 11697196

( Brand: Gmc Truck ), ( Part Type: Lid Motor Down ), ( Genuine Oem: Yes ), ( Ipn: 640.gm9521 )

Review GMC TRUCK Lid Motor Pull Down fits YUKONXL15 2021

The **GMC Yukon XL 2021 Lid Motor (Part Number: 11697196, GM9521, 640 series)** is a precision-engineered component designed specifically for the rear liftgate mechanism of the 2021 GMC Yukon XL, ensuring smooth, reliable operation of the vehicle s tailgate. This motor is a critical part of the **electric power liftgate system**, which enhances convenience by allowing the driver to open and close the rear hatch with the push of a button or via remote control. Built to withstand the demands of daily use, this motor is constructed with high-quality materials, including durable plastic housings and reinforced internal components, to resist wear, corrosion, and environmental factors such as moisture, dust, and temperature fluctuations. The design incorporates a **gear reduction system** to optimize torque and efficiency, ensuring the liftgate moves with precision and minimal effort, even when carrying heavy loads like cargo or passengers. Compatible exclusively with the **2021 GMC Yukon XL (640 series)**, this motor integrates seamlessly with the vehicle s existing electrical and mechanical systems, including the **GM9521 control module**, to provide a responsive and user-friendly experience. Whether used in residential, commercial, or off-road applications, this motor delivers consistent performance, contributing to the overall reliability and functionality of the vehicle s liftgate system. For optimal results, it is recommended to install this part using genuine GMC tools and procedures, ensuring proper alignment and electrical connections to maintain the integrity of the power liftgate mechanism.

### **Pros and Cons of Buying a 2021 GMC Yukon XL 15-Speed Automatic (LID Motor Down, VIN 11697196)**

#### **Pros**

1. **Reliability and Durability** The 2021 GMC Yukon XL is built on a solid foundation with a robust frame and high-quality materials. The 6.2L V8 engine (L86 or L96, depending on trim) is known for its longevity, especially when maintained properly. The LID motor down (low idle) modification suggests the vehicle has been well-cared-for, which is a positive indicator.

2. **Strong Engine Performance** The V8 engine provides ample power (400 horsepower, depending on the trim) and torque, making it suitable for towing, hauling, and highway driving. The 15-speed automatic transmission (likely the 6T75 or 6T70) is smooth and capable of handling heavy loads.

3. **Spacious and Comfortable Interior** The Yukon XL offers generous seating for up to eight passengers, with ample cargo space (up to 106.1 cubic feet behind the third row). The interior is well-insulated, reducing road noise, and higher trims include premium features like heated/ventilated seats, leather upholstery, and advanced infotainment.

4. **Safety Features** The 2021 model comes standard with GMC s safety suite, including forward collision alert, automatic emergency braking, blind-spot monitoring, and lane-keep assist. Higher trims may include additional safety tech like adaptive cruise control and 360-degree cameras.

5. **Resale Value** GMC SUVs, particularly the Yukon XL, hold their value relatively well compared to some competitors. A well-maintained 2021 model should retain a decent resale value over time.

6. **Towing and Hauling Capability** With proper maintenance, this vehicle can tow up to **8,500 9,000 lbs** (depending on configuration), making it ideal for boaters, campers, or those who frequently transport heavy loads.

7. **Comfortable Ride** The suspension is tuned for a smooth ride, balancing comfort with stability. The large size also helps absorb road imperfections, making long drives more enjoyable.

8. **Available Luxury Features** Depending on the trim (Denali, High Country, etc.), you may find premium options like a panoramic sunroof, premium audio systems, ventilated seats, and advanced driver aids.

9. **Low Mileage (Assuming It s Well-Maintained)** If this vehicle has been driven conservatively (as suggested by the "LID motor down" note), it may have lower-than-average wear on critical components like the transmission, engine, and suspension.

10. **Brand Reputation for Durability** GMC s reputation for building tough, long-lasting trucks and SUVs is well-established. Many owners report minimal issues if the vehicle is serviced regularly.

---

#### **Cons**

1. **High Maintenance Costs** V8 engines, while durable, require more frequent oil changes (every 5,000 7,500 miles) and can be expensive to repair if issues arise. Transmission fluid changes are also critical but often overlooked.

2. **Fuel Efficiency is Poor** The V8 engine delivers strong performance but at the cost of fuel economy. Expect **around 14 16 MPG combined**, which can be costly for long commutes or frequent highway driving.

3. **Size and Maneuverability** The Yukon XL is a large vehicle, making parking, navigating tight spaces, and city driving more challenging. Blind spots are significant, and backing up can be difficult.

4. **Potential Transmission Issues** While the 6T75/6T70 transmissions are generally reliable, they can develop problems if not properly maintained (e.g., delayed shifts, rough engagement). The "LID motor down" note suggests the transmission may have been adjusted for smoother operation, but past issues should still be investigated.

5. **Weight and Handling** The heavy weight of a loaded Yukon XL can make it sluggish in acceleration and less responsive to steering inputs compared to smaller SUVs.

6. **Depreciation** Like most large SUVs, the Yukon XL loses value quickly. If you plan to keep it long-term, depreciation could offset some of the initial cost.

- **Exhaust leaks** (common in V8s)

- **Suspension wear** (struts, bushings, control arms)

- **Brake system issues** (pads, rotors, calipers)

- **Electrical gremlins** (infotainment glitches, sensor failures)

- **Coolant system concerns** (water pump, thermostat, hoses)

8. **Noise and Vibration** Some owners report wind noise at highway speeds, and the V8 can be louder than smaller engines. Road noise insulation is decent but not perfect.

9. **Resale Market Competition** If you plan to sell later, you ll compete with newer models, which may have better tech and fuel efficiency.

- **Aftermarket tuning** (which may void warranties if not done properly)

- **Possible over-revving or stress on components** if not managed correctly

- **Unintended consequences** if the modification was not professionally installed

---

### **Key Considerations Before Purchase**

- Oil changes (type and intervals)

- Transmission fluid changes

- Coolant system service

- Brake and suspension work

- Timing belt/chain (if applicable)

- Engine compression and performance

- Transmission fluid condition and leaks

- Suspension and steering components

- Exhaust system for leaks

- Electrical system (lights, sensors, infotainment)

- Underbody for rust or damage

- Smoothness of acceleration and shifting

- Any unusual noises (knocking, rattling, whining)

- Braking performance and pedal feel

- Steering responsiveness

4. **Towing Capacity** If you plan to tow, ensure the vehicle s towing package is intact and that the hitch, wiring, and cooling system are in good condition.

- Was it professionally done?

- Are there any associated issues (e.g., fuel system changes, ECU tuning)?

- Has the engine run smoothly since the modification?

- Market value for a 2021 Yukon XL with similar mileage

- Cost of repairs if any issues are found

- Alternative vehicles (e.g., Ford Expedition, Chevrolet Tahoe, Toyota Sequoia)

---

### **Conclusion and Recommendation**

The **2021 GMC Yukon XL (VIN 11697196) with a V8 engine and 15-speed automatic transmission** is a **strong, capable vehicle** that excels in towing, hauling, and long-distance comfort. Its **reliability, power, and spaciousness** make it an excellent choice for those who prioritize performance and utility over fuel efficiency.

However, **potential downsides** such as **high maintenance costs, poor fuel economy, and size-related limitations** must be carefully considered. The **"LID motor down" modification** is a positive sign of attentive ownership, but **hidden mechanical issues could still exist**, making a **pre-purchase inspection mandatory**.

- You ve **verified the service history** and had a **professional inspection**.

- You **prioritize towing/hauling** over fuel efficiency.

- You re **prepared for higher maintenance costs** (oil changes, transmission care, etc.).

- The **price is fair** compared to similar well-documented examples.

- The seller **cannot provide full maintenance records**.

- The **test drive reveals unusual noises or performance issues**.

- The **modification history is unclear or improperly documented**.

- The **asking price is significantly above market value** without justification.

- **Get a PPI** (costs $100 $200 but can save thousands).

- **Negotiate based on findings** (e.g., deduct repair costs from the price).

- **Consider financing carefully** a large SUV with a V8 may have higher interest rates.

If all checks out, this Yukon XL could be a **great long-term investment**. If not, you may want to look for a **newer model with a warranty** or a **smaller, more fuel-efficient SUV** that still meets your needs.

Details:

specifications trunklipa:

• for models: Yukonxl15
• for makes: Gmc
• for years: 2021
• brand: Gmc Truck
• part type: Lid Motor Down
• genuine oem: Yes
• ipn: 640.gm9521

payments trunklipa:

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

offer trunklipa:

• started: May 4, 2026
• best offers: True
• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock

shipping trunklipa:

• class: Standard
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• transit: 2-5 Days
• cost: $0.00

general trunklipa:

• condition: Used
• Exterior Parts Accessories > doors, Trunk Lids Hatches > Hatches Trunk Lids

seller trunklipa:

• # reviews: 50129
• city: Spokane, Washington
• rating: 99.9%

returns trunklipa:

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

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