EXTANG Trifecta 750289946581 Chevy/gmc Silverado/sierra 8-FT 2500HD/3500HD

( Brand: Extang ), ( Manufacturer Part Number: 94658 ), ( Air Freight Prohibited: False ), ( Part Type: Automotive ), ( UPC: 750289946581 )

Review EXTANG Chevy/gmc Silverado/sierra Ft 2500hd/3500hd Trifecta fits SILVERADO SIERRA 2500HD 2020

The **Extang 94658** is a meticulously engineered, high-performance exhaust system designed exclusively for the 2020 Chevrolet Silverado and GMC Sierra HD models, including the robust **2500HD and 3500HD** variants, as well as the **Trifecta** package configurations. Crafted from premium **409 stainless steel**, this exhaust system is built to withstand the extreme demands of heavy-duty applications while delivering an aggressive, deep-throated tone that enhances both power delivery and aesthetic appeal. The **94658** features a **dual exhaust architecture** with a **4-into-1 header** on the passenger side and a **single 3-inch diameter tailpipe** on the driver s side, ensuring optimal flow and a commanding exhaust note that resonates with authority. The system incorporates **high-flow mufflers** with **acoustic chambers** to balance power and sound, eliminating the need for additional aftermarket mufflers while maintaining compliance with emissions standards. Engineered for durability, the **94658** includes **clamp-style hangers** with **galvanized steel brackets** for a secure, vibration-dampening fit, reducing road noise and ensuring long-term reliability. Whether paired with a stock engine or a performance upgrade, this exhaust system is a seamless integration that transforms the voice of your Silverado or Sierra HD, making it a standout choice for those seeking both performance and presence. Ideal for diesel and turbocharged applications, the **Extang 94658** is a premium upgrade that elevates the driving experience while maintaining the rugged integrity of the HD platform.

The **2020 Chevrolet/GMC Silverado 1500/2500HD/3500HD "Extang 94658"** (a rare, low-mileage, high-equipped example) presents a compelling but complex purchase opportunity. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Extremely Low Mileage**

- The "Extang" designation typically refers to a vehicle with unusually low mileage (often under 20,000 miles) for its age, which suggests minimal wear on critical components like the engine, transmission, and drivetrain. This reduces the risk of premature failure and extends the vehicle s usable lifespan.

2. **Full-Size Heavy-Duty Capability**

- The 2500HD and 3500HD trims are built on the **HD platform**, featuring a **heavy-duty frame, suspension, and drivetrain** (e.g., 6.6L Duramax diesel or 7.3L V8 gas, 4x4 options, and higher payload/towing ratings). This makes it ideal for commercial, off-road, or heavy-duty towing applications where durability is paramount.

3. **High-Trim Features**

- **Duramax 6.6L Turbo Diesel** (if equipped) with DPF, SCR, and advanced emissions systems though these require regular maintenance.

- **Z71 Off-Road Package** (if available), which includes skid plates, limited-slip differential, and terrain management modes.

- **Heavy-Duty Suspension** (stiffer springs, larger shocks) for better load-carrying and towing stability.

- **Commercial-grade interior** (heavy-duty seats, cargo management, and possibly a sleeper cab if it s a crew cab).

- **Advanced Tech** (Uconnect 4, available 12.3-inch touchscreen, backup camera, etc.).

- These features enhance functionality and resale value.

4. **Reliability of the Platform**

- The **2020 Silverado/Sierra HD** is based on a well-proven architecture (shared with the Ram 2500/3500). The **Duramax 6.6L diesel** (if present) is known for longevity when properly maintained, though it requires more frequent service than gasoline engines (e.g., DPF regeneration, SCR system checks).

- The **7.3L V8 gas engine** (in the 3500HD) is also robust, though less efficient than diesel.

5. **Resale Value and Market Demand**

- Low-mileage, high-trim HD trucks command strong resale value, especially in commercial or off-road markets. The "Extang" status makes it stand out in a crowded used market.

- GMC Silverado/Sierra HDs are popular among fleet operators, contractors, and enthusiasts, ensuring a ready buyer pool.

6. **Customization Potential**

- The vehicle s age (2020) means it s still relatively new for a used truck, leaving room for upgrades (e.g., aftermarket lighting, exhaust, lift kits, or tech enhancements) without major depreciation concerns.

7. **Warranty Considerations**

- If the seller provides a **certified pre-owned (CPO) warranty** or a **limited powertrain warranty**, this can offset some of the upfront cost and provide peace of mind. Some dealers offer extended warranties for low-mileage trucks.

8. **Fuel Efficiency (Diesel Option)**

- The **Duramax 6.6L diesel** offers superior fuel economy (around 18-22 MPG combined) compared to gasoline engines, making it cost-effective for high-mileage commercial use.

---

### **Cons**

1. **High Purchase Price**

- Low-mileage, high-trim HD trucks command a premium. The asking price for this vehicle may be **significantly above average** for a 2020 model, especially if it s being sold by a dealer or private party with limited competition.

- Example: A comparable 2020 2500HD with 20K miles might list for **$60,000 $80,000 **, depending on options. The "Extang" status could push this higher.

2. **Maintenance and Service Costs**

- **DPF (Diesel Particulate Filter) cleaning/regeneration** (every 500 700 miles if driven short distances).

- **SCR (Selective Catalytic Reduction) system** (requires AdBlue, a urea solution).

- **Exhaust gas recirculation (EGR) cooling system** (prone to leaks and failures).

- **Turbocharger and fuel injectors** (durable but expensive to replace if they fail).

- **Heavy-Duty Components**: Items like the **transfer case, driveshafts, and suspension** are more expensive to repair than those in a 1500-series truck.

- **Tires and Brakes**: HD trucks wear tires and brake components faster due to higher loads.

3. **Depreciation Risk**

- While low-mileage trucks depreciate slower than high-mileage ones, they still lose value over time. If you plan to keep it long-term, this may not be an issue, but if you anticipate selling soon, the depreciation curve could be steep.

4. **Potential for Hidden Issues**

- Even with low miles, **electrical gremlins** (common in modern trucks) or **minor wear on seals/gaskets** (e.g., oil leaks, coolant leaks) could arise. A **pre-purchase inspection (PPI)** is critical to avoid surprises.

- **Transmission issues** (e.g., 10-speed automatic in some models) have had minor recalls; ensure all service bulletins are addressed.

5. **Insurance Costs**

- HD trucks, especially diesel-equipped or 4x4 models, are more expensive to insure due to higher repair costs and theft risk. Expect premiums to be **20 30% higher** than a standard 1500-series truck.

6. **Storage and Usage Constraints**

- If you don t have a **garage or secure storage**, the truck may be vulnerable to weather damage (rust, paint chipping) or theft.

- **Diesel engines require more frequent use** to prevent DPF clogging (short trips can cause issues). If you won t drive it regularly, this could become a problem.

7. **Market Saturation**

- The used HD truck market is competitive, and while this vehicle is rare, there may be **similar low-mileage examples** available. Bidding wars or overpaying for exclusivity are risks.

8. **Resale Challenges**

- While the truck holds value well, **diesel models (especially older ones) can be harder to resell** due to emissions regulations and the shift toward cleaner alternatives. Gasoline engines (like the 7.3L V8) may have broader appeal.

---

### **Conclusion**

- Need a **durable, low-mileage workhorse** for commercial, off-road, or heavy-duty towing.

- Can afford the **higher upfront cost** and **maintenance expenses** associated with a diesel or HD platform.

- Plan to **keep the truck long-term** (5 years) and take advantage of its low-mileage status.

- Are prepared for **regular maintenance** (especially if diesel-equipped) and **higher insurance costs**.

- You re on a **tight budget** and can t justify the premium price.

- You **won t use the truck frequently** (diesel engines need regular driving to avoid DPF issues).

- You **prioritize fuel efficiency over power** (gasoline engines are simpler and cheaper to maintain).

- You **don t have access to proper storage** (risk of rust, theft, or weather damage).

---

### **Recommendation**

1. **Get a Pre-Purchase Inspection (PPI)**

- **Engine and drivetrain health** (check for leaks, compression, turbocharger condition).

- **Transmission fluid condition** (diesel transmissions require frequent checks).

- **Suspension and frame integrity** (look for rust, cracks, or misalignment).

- **Electrical system** (test all lights, sensors, and computer diagnostics).

- **Tires and brakes** (ensure no uneven wear or damage).

2. **Verify Maintenance Records**

- **Oil changes** (diesel engines need frequent changes, 5K 7K miles).

- **DPF/SCR service** (if diesel).

- **

Details:

The newly re designed Trifecta 2.0 Signature Series has a premium matte black finish and been built to last for years. Your choice in soft tri-fold covers is still simple. Trifecta Signature 2.0 Tonne Cover; Black; Acrylic Canvas; 2020 2026 Chevy Silverado/GMC Sierra 2500 HD/3500 HD 8ft. Choose Simple: Extang re designed soft tri-fold cover has a host of new features yet remains the easiest to install and simplest use.

part #: 94658 prices

• $519.99-$619.99

specifications otruckbedaccessories:

• for models: 2500hd, Silverado, Sierra
• for makes: Chevy, Gmc
• for years: 2020
• brand: Extang
• mpn: 94658
• air freight prohibited: False
• part type: Automotive
• upc: 750289946581

offer otruckbedaccessories:

• availability: In Stock
• quantity: 1
• started: June 10, 2026
• sold: 0
• options: Ship-to-home

seller otruckbedaccessories:

• # reviews: 55077
• city: Bonita, California
• rating: 99.7%

returns otruckbedaccessories:

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

general otruckbedaccessories:

• condition: New
• Exterior Parts Accessories > Truck Beds Parts > Truck Bed Accessories

payments otruckbedaccessories:

• other
• credit card: Diners-club
• wallet: Apple-pay

shipping otruckbedaccessories:

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

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