CADILLAC 9678077 Power Trunk Down Motor Gm

( Manufacturer Part Number: 9678077 ), ( Part Type: Trunk Down Motor ), ( Material: Steel ), ( Vintage Part: Yes ), ( Placement On Vehicle: Rear ), ( Country Of Origin: United States )

Review CADILLAC Vintage Power Trunk Pull Down Motor Oem Gm fits ELDORADO 1974–1978

The **Cadillac 9678077 Power Trunk Down Motor (1974 1978 Eldorado)** is a meticulously engineered, high-performance electric actuator designed to automate the opening and closing of the rear trunk on select Cadillac Eldorado models from the mid-1970s. This component is a critical element of the vehicle s luxury and convenience features, offering seamless operation with minimal manual effort a hallmark of Cadillac s commitment to refined automotive engineering during this era. Crafted for the **1974 through 1978 Eldorado** (including the Brougham and Seville variants), this motor is part of the **GM (General Motors) power trunk system**, which was standard on higher-end models to enhance both aesthetics and usability. The unit operates through a robust electric solenoid mechanism, driven by a 12-volt system, and is integrated into the trunk s latch and release assembly, allowing for smooth, silent activation with the push of a button or the flip of a switch. Its construction features durable materials, including reinforced plastic housings, precision-machined gears, and corrosion-resistant coatings, ensuring longevity even in demanding conditions. When functioning correctly, the motor provides a near-instantaneous response, effortlessly lifting or lowering the trunk lid with consistent torque, eliminating the need for manual cranking or levering. This component is particularly sought after by restoration enthusiasts and collectors, as it preserves the original functionality of these iconic vehicles while maintaining their vintage charm. For those seeking to restore or upgrade their Eldorado s power trunk feature, this motor is an essential, hard-to-find part that bridges the gap between classic automotive design and modern convenience. Proper installation requires careful alignment with the trunk s latch mechanism and wiring to the vehicle s electrical system, ensuring compatibility with the Eldorado s specific power trunk switch and control circuitry. Whether for a showroom-worthy restoration or a daily driver with a touch of old-world elegance, the **Cadillac 9678077 Power Trunk Down Motor** remains a prized addition for enthusiasts who appreciate the finer details of automotive heritage.

### **Pros and Cons of Buying a 1974 1978 Cadillac Eldorado (Power Trunk Down, GM V8 Engine)**

#### **Pros**

1. **Classic American Muscle and Luxury**

The Eldorado from this era represents the peak of 1970s Cadillac engineering, blending performance with opulence. The power trunk down (PTD) model was a high-end variant with enhanced features, including a more refined interior and optional performance upgrades.

2. **Strong V8 Engine Options**

These models came with GM s **350 455 cubic inch V8 engines**, which, while not as powerful as their pre-1970 counterparts due to emissions regulations, still deliver solid torque and a smooth, luxurious driving experience. The **400 455 V8** variants were particularly robust, capable of towing and hauling with ease.

3. **Iconic Styling and Prestige**

The Eldorado s **long hood, short deck, and distinctive front grille** make it one of the most recognizable Cadillacs of its era. Owning one carries a sense of prestige and nostalgia, appealing to enthusiasts who appreciate automotive history.

4. **Reliability for Its Era**

While not as durable as modern vehicles, GM s **big-block V8s** were well-built for their time, especially when properly maintained. Many examples from this era, when cared for, can last well over 200,000 miles with regular upkeep.

5. **Customization Potential**

The Eldorado s body style allows for extensive modifications, from **restomod projects** (restoring with modern performance parts) to **full restorations** with period-correct upgrades. The PTD model s unique features (like the power trunk mechanism) can be preserved or enhanced.

6. **Strong Aftermarket Support**

Parts for these Cadillacs are widely available, and there is a dedicated community of restorers and enthusiasts who share knowledge, modifications, and restoration tips.

7. **Potential for Appreciation**

As classic muscle cars and luxury vehicles from this era continue to gain value, well-preserved Eldorados especially rare variants like the PTD can appreciate over time, especially if maintained in showroom condition.

---

#### **Cons**

1. **High Maintenance Costs**

These vehicles are **not built for modern longevity**. Rust, worn suspension, failing electrical systems, and outdated fuel injection (or carburetion) require frequent attention. A full restoration can cost **$20,000 $50,000 **, depending on condition.

2. **Poor Fuel Economy**

With **V8 engines consuming 12 16 MPG**, running costs are significantly higher than modern vehicles. Gasoline prices today make ownership expensive for daily use.

3. **Rust and Structural Issues**

Many Eldorados from this era suffer from **frame rust, body panel corrosion, and worn-out chassis components**. A thorough inspection is essential before purchase.

4. **Outdated Safety and Comfort**

Modern safety features (airbags, stability control, crash structures) are absent. The ride can be **harsh and noisy** compared to today s standards, and heating/cooling systems may be inefficient.

5. **Limited Practicality**

The **long hood and short rear deck** make parking and maneuvering difficult. The **manual trunk mechanism** (even on PTD models) can be finicky, and the interior lacks modern convenience features like Bluetooth, backup cameras, or advanced infotainment.

6. **Emissions and Modern Compliance**

Older Cadillacs may not meet **modern emissions standards**, requiring modifications (like catalytic converter swaps) to pass inspections in some regions.

7. **High Insurance Costs**

Classic car insurance can be expensive, especially for high-value or modified examples. Standard auto insurance may exclude coverage for restoration projects.

8. **Market Saturation**

While Eldorados are desirable, **many are in poor condition**, leading to a glut of lower-quality examples. Finding a **well-documented, restored, or restored-to-original** PTD model can be challenging and costly.

---

### **Conclusion**

Buying a **1974 1978 Cadillac Eldorado (PTD or otherwise)** is a **passion project** rather than a practical purchase. It is ideal for **enthusiasts who appreciate classic luxury, enjoy restoration work, and prioritize nostalgia over modern convenience**. If you are willing to invest **time, money, and effort** into maintaining or restoring it, the payoff in terms of **driving pleasure, collector value, and automotive heritage** can be substantial.

However, if you seek **reliability, fuel efficiency, safety, or practicality**, this is **not the right vehicle** for you. Modern alternatives (even older luxury cars like the **1990s 2000s Cadillac Seville**) offer far better daily usability.

---

### **Recommendation**

- You have **mechanical experience** or access to a trusted mechanic.

- You are **financially prepared** for high maintenance and restoration costs.

- You **love the era s styling** and want a **showpiece or project car**.

- You plan to **drive it occasionally** (not daily) and enjoy the **vintage driving experience**.

- You need a **reliable, low-cost, or practical vehicle**.

- You are **unwilling to commit to long-term maintenance**.

- You prioritize **modern safety, fuel efficiency, or technology**.

- **Start with a well-documented example** (preferably with a **restoration history**).

- **Budget for a full restoration** (or at least a **comprehensive inspection**).

- **Consider a less expensive alternative** (e.g., a **1970s 80s Buick Electra, Lincoln Continental, or older Mercedes**) if the Eldorado s price exceeds your comfort zone.

For the right buyer, this Eldorado will be a **lifetime passion project** for everyone else, it may become a **financial and mechanical burden**.

Details:

Sold as-is photos are part of the. Vehicle: 1974 Cadillac Eldorado. Vintage pre-owned condition. Recommended for testing or refurbishment.

Shows typical wear: aging, dirt, or minor corrosion. Untested working condition unknown. This factory GM component allows for remote trunk opening and is a key convenience feature on luxury Cadillac's of the era. Item: Power Trunk Release Assembly.

Wiring appears intact see photos. Factory power trunk release system. OEM GM electrical component. Beyond that I don't know the working condition.

Type: Electrical Trunk Release Component. Original electrical components like this are becoming harder to find. Part Number: 9678077. Offered for sale is an original 1974 Cadillac Eldorado power trunk release assembly, Part #9678077.

Includes: Wiring Harness. The motor does rotate. Correct for 1974 Cadillac Eldorado. Ideal for repair.

part #: 9678077 prices

• $139.99-$190.00

specifications trunklipa:

• for models: Eldorado
• for makes: Cadillac
• for years: 1974-1978
• mpn: 9678077
• part type: Trunk Down Motor
• material: Steel
• vintage part: Yes
• placement on vehicle: Rear
• country of origin: United States

returns trunklipa:

• policy: No Returns

seller trunklipa:

• # reviews: 1313
• rating: 99.2%
• city: Glendale, Arizona

shipping trunklipa:

• cost: $21.05
• class: Standard
• type: Calculated
• transit: 4-10 Days
• carrier: USPS
• service: USPS Ground Advantage

general trunklipa:

• condition: For parts or not working
• Exterior Parts Accessories > doors, Trunk Lids Hatches > Hatches Trunk Lids

offer trunklipa:

• quantity: 1
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: June 1, 2026

payments trunklipa:

• other
• credit card: Discover
• wallet: Paypal

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