1. Throttle Body For Sale
  2. sku: 11729476060861773
  3. GMC GD-AISI9

GMC GD-AISI9 Throttle Body 6.6L CU3

fits model: 2500, D-3, Sierra, Denali. make: Gmc. year: 2016.

Gd-aisi9 Gmc 2016 Sierra Denali 2500 6.6l V Shaped Throttle Body Oem D-3 Cu3

( Manufacturer Part Number: GD-AISI9 ), ( Items Included: Throttle Control Motor, Throttle Position Sensor, Throttle Valve ), ( Color: Oem ), ( Material: Aluminum ), ( Vintage Part: No ), ( Type: Throttle Body ), ( Features: Electronic )

Review GMC 6.6l Shaped Throttle Body Oem Cu3 fits SIERRA DENALI 2500 D-3 2016

The **2016 GMC Sierra Denali 2500HD with the 6.6L Duramax Diesel (D-3) and Throttle Body Delete** is a robust, high-performance workhorse designed for those who demand both rugged capability and refined luxury in a single package. Built on the legendary **Duramax 6.6L V8 diesel engine**, this heavy-duty truck delivers an impressive **445 horsepower and 910 lb-ft of torque**, making it one of the most powerful diesel trucks of its era. The **D-3** designation refers to the third-generation Duramax, which introduced advanced fuel injection, a turbocharger with variable geometry, and a high-pressure common-rail system, ensuring smooth power delivery whether hauling heavy loads, towing a massive trailer, or cruising on the highway. The **throttle body delete** modification further enhances performance by eliminating air resistance, allowing the engine to breathe more efficiently and improving throttle response, especially in high-demand situations.

The **2016 Sierra Denali 2500HD** is a full-size truck engineered for serious duty, featuring a **6.5-foot bed** that provides ample cargo space for tools, equipment, or outdoor gear. Its **heavy-duty suspension**, reinforced frame, and available **Max Trailering Package** make it a reliable choice for off-road adventures, construction work, or long-distance hauling. The **Denali trim** elevates the cabin with premium materials, including **Nappa leather-trimmed seats**, **wood and aluminum accents**, and a **12-speaker Bose audio system** for an immersive listening experience. The **8-inch touchscreen infotainment system** with **Apple CarPlay and Android Auto ** integration ensures connectivity, while the **available 12.3-inch digital gauge cluster** provides real-time performance data, including engine RPM, fuel economy, and trailer sway detection.

Under the hood, the **Duramax 6.6L diesel** is paired with a **6-speed Allison transmission**, offering smooth shifting and exceptional towing capability capable of handling up to **12,500 pounds** when properly equipped. The **diesel exhaust fluid (DEF) system** ensures compliance with emissions regulations while maintaining efficiency, and the **cold weather package** allows for reliable starts in freezing temperatures. For added comfort and convenience, the Denali version includes **power-adjustable front seats**, **heated and ventilated front seats**, and **available heated and cooled rear seats**, making long drives more enjoyable. The **available **48V mild-hybrid system** further enhances fuel efficiency and reduces emissions without compromising power.

Externally, the **2016 Sierra Denali 2500HD** exudes confidence with its **bold front grille**, **LED headlights and taillights**, and **available **36-inch chrome wheels** that complement its imposing presence. The **available **Denali Trailering Package** includes a **towing package with a digital trailer brake controller**, **towing mirrors**, and **towing lights**, ensuring safety and functionality when hauling heavy loads. Whether parked in a driveway, parked on a job site, or cruising down a scenic highway, this truck commands attention with its **luxury-meets-duty aesthetic**, making it a standout choice for those who refuse to compromise on performance, comfort, or style. With its **throttle body delete**, this modified Duramax engine delivers even more power and responsiveness, ensuring that every drive is as engaging as it is efficient.

### **Pros and Cons of Buying a 2016 GMC Sierra Denali 2500HD (6.6L Duramax Diesel, Throttle Body D-3, 4x4)**

#### **Pros**

1. **Strong Diesel Engine (6.6L Duramax)**

- The Duramax 6.6L is a reliable, high-torque diesel engine known for durability, especially in heavy-duty applications. It produces **445 hp and 900 lb-ft of torque**, making it well-suited for towing, hauling, and off-road use.

- The **throttle body D-3** modification (common in aftermarket tuning) can improve throttle response and power output, though it may require additional maintenance.

2. **High Towing & Hauling Capacity**

- The 2016 Sierra Denali 2500HD has a **maximum towing capacity of up to 13,200 lbs** (with proper equipment) and a payload capacity of around **2,000 lbs**, making it ideal for commercial or heavy-duty use.

- The **4x4 capability** enhances off-road and snow traction, useful for work or recreational driving in rough terrain.

3. **Durability & Longevity**

- GM s Duramax engines are built to last, with many exceeding **300,000 miles** with proper maintenance. The **6.6L is known for its robustness**, though common issues (like turbocharger failures) can occur if not serviced correctly.

- The **Denali trim** includes higher-quality materials, better sound insulation, and premium features compared to base models.

4. **Strong Resale Value**

- GMC Sierra Denali models, especially diesel variants, hold their value well due to their reputation for reliability and performance.

5. **Comfort & Luxury Features**

- The Denali trim offers **leather-trimmed seats, heated front seats, a premium infotainment system (with optional navigation), and a refined interior** compared to lower trims.

- The **suspension is well-tuned for comfort**, making long drives more enjoyable.

6. **Aftermarket & Modification Potential**

- The Duramax platform has a **large aftermarket support**, including performance upgrades (throttle body D-3, turbo upgrades, exhaust systems), diagnostic tools, and parts availability.

- The **4x4 system** can be further tuned for off-road use with locking differentials, lift kits, and skid plates.

7. **Fuel Efficiency (Compared to Gas Engines)**

- While not as efficient as modern diesels, the **6.6L Duramax still offers 12-15 MPG in mixed driving**, which is better than most gas-powered trucks of similar size.

---

#### **Cons**

1. **Common Duramax Engine Issues**

- **Turbocharger failures** (especially in earlier models) can be costly if not maintained properly (regular turbo inspections and oil changes are critical).

- **EGR (Exhaust Gas Recirculation) system failures** can lead to **DPF (Diesel Particulate Filter) clogging**, requiring expensive cleaning or replacement.

- **Injector failures** can occur if fuel quality is poor or maintenance is neglected.

- **Oil consumption** is higher than in gasoline engines, requiring more frequent top-ups.

2. **High Maintenance Costs**

- Diesel engines require **more frequent and specialized maintenance** than gasoline engines, including:

- **Oil changes every 5,000-7,500 miles** (with high-quality diesel oil).

- **DPF regeneration cycles** (if equipped) to prevent clogging.

- **Exhaust system inspections** for leaks or turbo damage.

- **Parts can be expensive**, especially for aftermarket or performance upgrades.

3. **Throttle Body D-3 Modification Risks**

- While the **D-3 throttle body** improves throttle response, it can **increase turbo stress** if not paired with proper supporting mods (like upgraded intercooler, fuel system, and exhaust).

- **Voiding warranties** if not installed by a professional.

- **Potential for engine damage** if the engine isn t ready for increased airflow (requires tuning and fuel system upgrades).

4. **Transmission & Drivetrain Concerns**

- The **6-speed automatic transmission** can be **less refined than modern 10-speed automatics** in newer trucks, with some reports of **rough shifting or delayed engagement**.

- **4x4 systems** (especially in older models) can be **less responsive** than modern systems with better electronic control.

5. **Diesel Particulate Filter (DPF) & Emissions Compliance**

- The **DPF requires periodic regeneration**, which can be triggered by short trips (common in urban driving), leading to **engine limp mode** if not managed properly.

- **Diesel exhaust fluid (DEF) requirements** add extra maintenance (though the 2016 model may not have DEF like later ones).

6. **Higher Upfront Cost**

- Diesel trucks are **more expensive to purchase** than gasoline equivalents, and the **Denali trim adds significant cost** compared to base models.

7. **Resale Depreciation (Compared to Gas Engines)**

- While Duramax trucks hold value well, **gasoline engines (especially newer ones) may depreciate slower** in some markets.

8. **Noise & Vibration**

- Diesel engines are **louder and more vibration-prone** than gasoline engines, which can be noticeable in the cabin over time.

---

### **Ending Conclusion & Recommendation**

The **2016 GMC Sierra Denali 2500HD (6.6L Duramax, Throttle Body D-3, 4x4)** is a **powerful, capable truck** well-suited for **towing, hauling, and off-road use**, especially if you prioritize **durability and performance**. However, it comes with **higher maintenance demands, potential engine issues, and increased costs** compared to gasoline alternatives.

#### **Who Should Buy This Truck?**

**Best for:**

- **Heavy-duty work** (towing trailers, construction, farming, commercial use).

- **Off-road enthusiasts** who want a **4x4 platform with aftermarket potential**.

- **Buyers who prioritize longevity and torque** over fuel efficiency.

- **Those who plan to invest in maintenance** (oil changes, turbo care, EGR cleaning).

- **People who want a premium Denali interior** with luxury features.

#### **Who Should Avoid It?**

**Not ideal for:**

- **Daily drivers who prefer low maintenance** (gas engines require less upkeep).

- **Budget-conscious buyers** (higher purchase price, fuel, and maintenance costs).

- **Those who don t want to deal with diesel-specific issues** (DPF, turbo, injectors).

- **People who don t plan to modify it** (the D-3 throttle body requires supporting upgrades).

- **Urban drivers who do mostly short trips** (DPF regen issues, lower MPG in stop-and-go traffic).

#### **Final Recommendation:**

If you **need a heavy-duty truck for work or off-roading, have the budget for maintenance, and are okay with diesel-specific challenges**, this **2016 Sierra Denali 2500HD is a solid choice**, especially with the **Duramax engine and 4x4 system**.

However, if you **prioritize lower maintenance, better fuel efficiency, or a smoother ride**, consider:

- A **newer diesel truck (2019 with 10-speed transmission)** for better tech and reliability.

- A **gas-powered heavy-duty truck (e.g., Ford F-250 Super Duty, Ram 2500)** if diesel isn t a must.

- A **used diesel truck with a clean service history** to mitigate some risks.

**Before purchasing:**

- **Get a pre-purchase inspection** (focus on turbo, injectors, EGR, and transmission).

- **Verify maintenance records** (oil changes, turbo inspections, DPF cleaning).

- **Budget for potential upgrades** (if modifying with the D-3 throttle body).

- **Consider insurance costs** (diesel trucks can be more expensive to insure).

If you re **prepared for the responsibilities**, this truck offers **exceptional power and capability** for the right buyer. If not, a **newer or differently powered truck** may be a better long-term investment.

Details:

This used item comes with a 30 Day Warranty Parts ONLY - NO Labor.

part #: gdaisi9 price

  • $43.22

specifications throobo:

  • for models: 2500, D-3, Sierra, Denali
  • for makes: Gmc
  • for years: 2016
  • mpn: Gd-aisi9
  • items included: Throttle Control Motor, Throttle Position Sensor, Throttle Valve
  • color: Oem
  • material: Aluminum
  • vintage part: No
  • type: Throttle Body
  • features: Electronic

seller throobo:

  • city: Homosassa, Florida
  • # reviews: 734
  • rating: 99.7%

shipping throobo:

  • type: Fixed
  • cost: $0.00
  • transit: 4-9 Days
  • service: Standard
  • class: Standard

offer throobo:

  • sold: 0
  • options: Ship-to-home
  • quantity: 1
  • started: May 7, 2026
  • availability: In Stock
  • best offers: True

general throobo:

  • condition: Used
  • Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies

returns throobo:

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

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for models: 2500, d-3, sierra, denali, for makes: gmc, for years: 2016, items included: throttle control motor, throttle position sensor, throttle valve, vintage part: no, type: throttle body, features: electronic,
category: auto parts > car truck parts accessories > air fuel delivery > throttle bodies, color: oem, material: aluminum, sku: 11729476060861773,
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