BUICK 640.GM4U95 Ave Lid Motor Down

( Part Type: Lid Motor Down ), ( Genuine Oem: Yes ), ( Ipn: 640.gm4u95 ), ( Manufacturer Warranty: 60 Day )

Review BUICK Ave Lid Motor Pull Down fits PARK 1995

The **1995 Buick Park Avenue 640 (GM4U95) with a lid motor down** represents a refined and understated luxury sedan from the late 1990s, blending classic Buick elegance with the practicality of a full-size American car. This particular model is equipped with the **347-cubic-inch (5.7L) V8 engine**, a robust powerplant that delivers a smooth yet powerful driving experience, making it a standout choice for those seeking both comfort and performance. The "lid motor down" designation indicates that the hood is fully closed, ensuring the engine bay remains clean and protected, which is ideal for a vehicle that has been well-maintained or stored properly. The **1995 Park Avenue** was part of Buick s premium lineup, offering a spacious, upscale interior with high-quality materials, including leather-trimmed seats, power-adjustable controls, and a quiet, well-insulated cabin that minimizes road noise. The exterior features a bold, angular design with sharp creases and a commanding presence, while the interior exudes sophistication with its wood-trim accents, dual-zone automatic climate control, and a user-friendly dashboard layout. This model also includes standard features like a **till-style rearview mirror**, power windows and locks, and a **4-speed automatic transmission**, ensuring a blend of convenience and driving dynamics. Whether used for daily commuting, weekend drives, or as a reliable family vehicle, the **1995 Buick Park Avenue 640** with its lid motor down offers a timeless blend of American craftsmanship and luxury, making it a compelling choice for enthusiasts and collectors alike.

### **Pros and Cons of Buying a 1995 Buick Park Avenue (L30/Lid Motor, GM4U95, 640,000 Miles)**

#### **Pros**

1. **Reliability of the L30 Engine**

- The **L30 V6** (3.8L) is a well-regarded engine known for its durability, especially when properly maintained. Many examples with high mileage run reliably if the timing chain, water pump, and valve train have been serviced.

- Unlike some older GM V8s, the L30 is less prone to catastrophic failure if basic maintenance (oil changes, coolant flushes) was done regularly.

2. **Comfortable Ride and Spacious Interior**

- The Park Avenue is a full-size luxury sedan with a smooth ride, especially on highways.

- The interior is roomy, with good legroom and headroom for passengers, making it suitable for long trips.

- Features like power windows, locks, and climate control are standard, adding convenience.

3. **Proven Transmission Options**

- The **4T60-E automatic transmission** (common in this model) is a robust unit when maintained. Many high-mileage examples with proper fluid changes and torque converter service still operate smoothly.

- The **5-speed manual** (less common in this trim) is reliable but less desirable for daily driving.

4. **Resale Value and Availability of Parts**

- As a Buick, the Park Avenue has a loyal following, and parts (especially for the L30) are still widely available.

- The model is not overly rare, so finding mechanics familiar with it is easier than with some niche vehicles.

5. **Potential for Restoration or Modification**

- The L30 can be upgraded with performance parts (e.g., headers, ECU tuning) to improve power and reliability.

- The body is sturdy, and classic Buick interiors (especially with the **Park Avenue** badge) hold appeal for enthusiasts.

---

#### **Cons**

1. **High Mileage and Wear Concerns**

- **640,000 miles** is extremely high for a V6, even one as durable as the L30. At this point, **critical components** (timing chain, water pump, head gaskets, cylinder head bolts, and transmission internals) are likely worn or failing.

- The **oil consumption** may be an issue many L30s develop leaks or excessive burn at this mileage.

2. **Transmission Reliability Risks**

- The **4T60-E** is a strong transmission, but at 640K miles, **solenoid failure, torque converter slippage, or internal wear** are likely.

- **Fluid leaks** (from the pan gasket or cooler lines) are common, and the fluid itself may be degraded, leading to rough shifting or failure.

3. **Electrical and Computer Issues**

- Faulty **fuse blocks** or **relays**.

- **ECU (Engine Control Module) failures** (common in L30s after 300K miles).

- **Window regulators** and **door locks** may be seized or failing.

- **A/C and heater systems** often require major repairs at this age.

4. **Suspension and Steering Wear**

- **Shocks, struts, and bushings** will be well past their lifespan, leading to a **rough ride and poor handling**.

- **Power steering fluid leaks** and **pump failure** are common, making steering effortful.

- **Rust** (especially in the wheel wells, frame rails, and undercarriage) can weaken structural integrity.

5. **Fuel Economy and Modern Standards**

- The **L30 gets around 18-22 MPG**, which is poor by today s standards, especially if the car is used for daily commuting.

- **Modern emissions and safety regulations** mean parts (catalytic converters, OBD-II compliance) may be harder to source or require modifications.

6. **Hidden Costs of Ownership**

- **Timing chain tensioner and guides** often fail in L30s, leading to **catastrophic engine damage** if ignored.

- **Head gasket leaks** (common in high-mileage V6s) can cause **coolant/oil mixing**, overheating, and expensive repairs.

- **Exhaust manifold cracks** and **oxygen sensor failures** are frequent issues.

7. **Safety and Modern Features**

- **No modern safety tech** (no ABS, airbags may be weak or failing, no stability control).

- **Visibility** can be poor due to aging windshield wipers, cracked glass, or misaligned mirrors.

- **Noisy cabin** (vacuum leaks, rattling panels, worn seats) reduces comfort.

---

### **Ending Conclusion**

A **1995 Buick Park Avenue with 640,000 miles and an L30 engine** is a **high-risk purchase** that may offer **short-term utility** but is **not a reliable long-term investment**. While the L30 is a strong engine, **this mileage is pushing the limits of what can be reasonably expected without major repairs**. The **transmission, suspension, electrical, and rust issues** make it a **project car** rather than a **drive-ready vehicle**.

If you are **mechanically inclined and willing to invest significant time and money**, this car could be **restored to a functional (or even enjoyable) state**. However, for **most buyers**, the **cost of repairs will far exceed the car s value**, making it a **poor financial decision**.

---

### **Recommendation**

1. **Walk Away Unless You re a Mechanic with Deep Pockets**

- Unless you have **mechanical expertise** and can **budget for a full rebuild** (engine, transmission, suspension, electrical), this car is **not worth the risk**.

2. **If You Must Buy, Do This First**

- **Get a pre-purchase inspection (PPI) from a trusted mechanic** specializing in GM V6s.

- **Timing chain service** (never been done? **Walk away.**)

- **Transmission fluid changes** (should be done every **30K miles**).

- **Head gasket checks** (look for oil/coolant leaks).

- **Rust inspection** (check wheel wells, frame, undercarriage).

- **Test drive carefully** listen for **knocking (engine), grinding (transmission), or excessive noise (suspension).**

3. **Consider a Lower-Mileage Alternative**

- If you love the Park Avenue, look for a **model with under 300K miles** and a **complete service history**.

- A **1993-1997 Buick LeSabre or Regal** with a **3100 V6 or 350 V8** may offer better reliability for the same price.

4. **Alternative Use Cases**

- If you **only need a car for occasional use** (e.g., weekend trips, hauling), it *might* work if you **budget for repairs**.

- If you **enjoy classic car restoration**, this could be a **fun project** but expect **$5,000 in repairs** just to get it running.

5. **Final Verdict: Not Worth It for Most Buyers**

- **Avoid unless you re prepared for a major investment.**

- **Better options exist** (even in the used market) that will be **more reliable and safer** for the same or slightly higher cost.

Would you like guidance on **specific repairs** or **alternative Buick models** to consider?

Details:

part #: 640.gm4u95 prices

• $18.25-$58.95

specifications trunklipa:

• for models: Park
• for makes: Buick
• for years: 1995
• part type: Lid Motor Down
• genuine oem: Yes
• ipn: 640.gm4u95
• manufacturer warranty: 60 Day

payments trunklipa:

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

offer trunklipa:

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

seller trunklipa:

• rating: 99.9%
• city: Ontario, Oregon
• # reviews: 932

returns trunklipa:

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

general trunklipa:

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

shipping trunklipa:

• type: Fixed
• class: Standard
• transit: 3-8 Days
• service: Standard
• cost: $0.00

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