GMC TRUCK SIERRA350 High Light 176.GM9O16

( Brand: Gmc Truck ), ( Manufacturer Part Number: SIERRA350 ), ( Part Type: Light Stop ), ( Genuine Oem: Yes ), ( Ipn: 176.gm9o16 ), ( Partout Id: A-122323748 )

Review GMC TRUCK High Mounted Stop Light fits SIERRA 3500 2016

The **GMC Sierra 3500 HD 2016 (VIN: 176GM9O16S)** is a robust and versatile heavy-duty workhorse designed to tackle the toughest jobs with ease while delivering unmatched comfort and capability for both professional and off-road enthusiasts. Built on the legendary **Duramax 6.6L Turbo Diesel V8 engine**, this model is engineered to deliver an impressive **460 horsepower and 975 lb-ft of torque**, ensuring effortless towing capacity of up to **14,000 pounds** when properly equipped, making it ideal for hauling large trailers, construction equipment, or even recreational vehicles. The **Duramax engine** is paired with an **Allison 10-speed automatic transmission**, providing smooth, responsive shifting even under heavy loads, while the **Zeroth Generation (Z06) Duramax** features advanced fuel injection and turbocharging for improved efficiency and reliability critical for long-haul truckers and demanding work environments.

The **2016 GMC Sierra 3500 HD** is available in multiple cab configurations, including the **extended crew cab** and **crew cab**, offering ample seating for up to six passengers while maintaining a spacious cargo area. The **high-roof design** further enhances interior roominess, making it practical for transporting tools, materials, or even oversized equipment. Exterior styling reflects GMC s rugged yet refined aesthetic, with a **bold front grille, sharp LED headlights**, and available **LED taillights**, ensuring both visibility and a commanding presence on the road. The **heavy-duty suspension** is tuned for stability and comfort, featuring **adjustable air suspension** (on higher trims) that allows for optimal ride height and load balancing, whether carrying a full payload or cruising on the highway.

Safety and technology are prioritized in this model, with standard features including **stability control, traction control, and a rearview camera** to assist with backing up. Higher trims offer advanced driver aids like **forward collision alert, blind-spot monitoring, and lane-keep assist**, enhancing situational awareness in demanding work or highway conditions. The **infotainment system** (depending on trim) integrates a **7-inch touchscreen** with Apple CarPlay and Android Auto compatibility, allowing for seamless connectivity with smartphones for navigation, audio, and messaging. For those who demand extra functionality, the **available **GMC s **BedMates** system** integrates with compatible trailers, providing real-time load monitoring and stability alerts.

Under the hood, the **Duramax engine** is paired with a **6.2L V8 gasoline option** for those who prefer a more fuel-efficient alternative, though the diesel remains the powerhouse choice for towing and hauling. The **cab-over-engine (COE) option** is available, offering a unique, compact footprint that maximizes cargo space while maintaining driver visibility. Whether used for **construction, agriculture, or heavy-duty transport**, this **2016 GMC Sierra 3500 HD** combines **unmatched power, durability, and practicality** into a single, rugged package. With its **proven reliability, advanced technology, and GMC s signature build quality**, this truck is a dependable asset for professionals who demand performance without compromise.

### **Pros and Cons of Buying a 2017 GMC Sierra 3500HD (GM9O16) with the 6.6L Duramax Diesel (High Output)**

#### **Pros**

1. **Strong Engine and Towing Capacity**

The 6.6L Duramax High Output (HO) diesel is one of the most powerful diesel engines in its class, producing **470 horsepower and 900 lb-ft of torque**. This makes it ideal for heavy-duty tasks like towing large trailers, hauling heavy loads, or pulling heavy equipment. The HO version is significantly more powerful than the standard Duramax, offering better performance for demanding applications.

2. **Durability and Longevity**

The Duramax engine is known for its robustness and ability to last well beyond 200,000 miles with proper maintenance. Diesel engines are generally more durable than gasoline engines, especially when used for heavy-duty work. The 2017 model benefits from updates made to earlier Duramax engines, reducing common issues like turbocharger failures and fuel system problems.

3. **Fuel Efficiency**

While not as fuel-efficient as some smaller diesel trucks, the 3500HD still offers **better mileage than a comparable gasoline-powered truck**. In mixed driving, it can achieve around **12-15 MPG**, which is reasonable for a heavy-duty truck. The HO version may have slightly lower efficiency due to its power output, but it compensates with raw towing power.

4. **Towing and Payload Capacity**

The 2017 GMC Sierra 3500HD has a **maximum towing capacity of up to 17,600 lbs** (depending on configuration) and a payload capacity of around **5,000 lbs**. This makes it one of the best trucks for commercial use, construction, or heavy-duty recreational towing (like large boats or RVs).

5. **Comfort and Refined Ride**

The Sierra 3500HD offers a surprisingly smooth ride for a heavy-duty truck, thanks to its **air suspension (available on some trims)** and well-tuned suspension system. The cabin is spacious and well-insulated, providing comfort for long drives. The **360-degree camera** (available on higher trims) is a useful feature for backing up and maneuvering in tight spaces.

6. **Reliability Improvements Over Older Models**

- Improved turbocharger design (reducing turbo lag and increasing longevity).

- Better fuel injection systems (reducing the risk of injector failures).

- Strengthened engine blocks and components to handle higher power outputs.

7. **Resale Value**

The GMC Sierra 3500HD, especially with the Duramax HO, retains a strong resale value compared to many other heavy-duty trucks. Diesel trucks with good maintenance records hold their value well, making this a solid long-term investment.

8. **Available Technology and Features**

- **8-inch touchscreen infotainment** (with Apple CarPlay and Android Auto on higher trims).

- **Available 4G LTE Wi-Fi hotspot** (useful for work or travel).

- **Adaptive cruise control** and **blind-spot monitoring** (on higher trims).

- **Available 12.3-inch digital gauge cluster** (providing detailed engine and vehicle data).

9. **Versatility**

The 3500HD is available in **crew cab and extended cab configurations**, making it suitable for both work and passenger needs. The **available dually rear wheels** further enhance its off-road and heavy-duty capabilities.

10. **Aftermarket Support**

The Duramax HO has a strong aftermarket community, with plenty of upgrades available for performance, fuel efficiency, and longevity. Modifications like **exhaust tuning, fuel system upgrades, and cooling system enhancements** can further extend the engine s life and improve performance.

---

#### **Cons**

1. **High Initial Cost**

The 2017 GMC Sierra 3500HD, especially with the Duramax HO, is an expensive truck to purchase. Even used models in good condition can cost **$30,000 to $50,000 **, depending on mileage, condition, and options. This makes it a significant financial commitment.

2. **Maintenance and Repair Costs**

- **Fuel system cleaning** (every 30,000 50,000 miles to prevent injector clogging).

- **Turbocharger servicing** (some owners replace turbos every 150,000 200,000 miles).

- **DPF (Diesel Particulate Filter) and EGR (Exhaust Gas Recirculation) system cleaning** (required to meet emissions standards).

- **Coolant and oil changes** (diesel engines need frequent coolant flushes to prevent scaling).

- **Transmission fluid changes** (some owners recommend changing it every 50,000 100,000 miles).

These costs add up over time and can be higher than those for gasoline-powered trucks.

3. **Fuel Costs**

Diesel fuel is generally more expensive than gasoline, though prices fluctuate. While the Duramax is efficient for its class, fuel costs for heavy-duty use (especially towing) can be significant. Additionally, **diesel exhaust fluid (DEF) requirements** add another cost for compliance with emissions regulations.

4. **Resale Depreciation**

While the Sierra 3500HD retains value better than many trucks, it still depreciates over time. If you plan to sell it in a few years, the resale value may not fully offset the initial purchase price, especially if the truck has high mileage or wear.

5. **Noise and Vibration**

The Duramax HO is a **loud engine**, especially at lower RPMs. Some owners report noticeable vibration at highway speeds, though this can be mitigated with proper suspension tuning or aftermarket upgrades. The cabin can also feel a bit "boxy" compared to more premium trucks.

6. **Emissions and Compliance**

The 2017 Duramax is **2010 emissions compliant**, which means it requires **DEF (Diesel Exhaust Fluid)** to meet regulations. Running out of DEF can cause the truck to shut down, and improper maintenance of emissions systems (DPF, EGR, SCR) can lead to costly repairs or failure to pass emissions tests in some states.

7. **Limited Availability of Parts**

While Duramax parts are widely available, some **aftermarket and OEM parts can be expensive**. Rarely needed components (like certain sensors or injectors) may take longer to arrive, which can be inconvenient for owners who rely on their truck for work.

8. **Potential for Early-Wear Issues**

Some 2017 Duramax HO engines (especially those with higher mileage) may have experienced **early turbocharger failures** or **fuel system issues** if not properly maintained. It s important to **check service records** and inspect the truck thoroughly before purchasing to avoid hidden problems.

9. **Not Ideal for Short-Trips or Stop-and-Go Driving**

Diesel engines, including the Duramax, are optimized for **high-speed, steady driving**. Frequent short trips can lead to **carbon buildup in the DPF**, requiring more frequent cleanings. If you primarily drive in urban areas with lots of idling, a diesel may not be the best choice.

10. **Limited Off-Road Capabilities (Compared to Specialized Trucks)**

While the 3500HD can handle light off-roading, it is not as capable as trucks like the **Ford F-250 Super Duty with off-road packages** or **Ram 2500 with locking differentials**. If off-roading is a priority, you may need additional modifications.

---

### **Conclusion**

The **2017 GMC Sierra 3500HD with the 6.6L Duramax High Output diesel** is an **excellent choice for those who need a heavy-duty, high-towing-capacity truck** for work, commercial use, or serious off-road applications. Its **raw power, durability, and towing ability** make it one of the best diesel trucks in its class. However, it comes with **higher upfront and maintenance costs**, as well as **emissions-related complexities** that require diligent upkeep.

If you **prioritize towing, payload capacity, and long-term reliability** and are prepared for the **higher costs of ownership**, this truck is a **strong recommendation**. On the other hand, if you **drive mostly in urban areas, want lower maintenance costs, or don t need extreme towing power**, a **gasoline-powered heavy-duty truck or a smaller diesel** might be a better fit.

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### **Recommendation**

You **

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specifications lightinglam:

• for models: 3500, Sierra
• for makes: Gmc
• for years: 2016
• brand: Gmc Truck
• mpn: Sierra350
• part type: Light Stop
• genuine oem: Yes
• ipn: 176.gm9o16
• partout id: A-122323748

returns lightinglam:

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

payments lightinglam:

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

general lightinglam:

• condition: Used
• Car Truck Parts Accessories > Lighting Lamps > Third Brake Light Assemblies

offer lightinglam:

• best offers: True
• started: April 10, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock

seller lightinglam:

• city: Richland, Mississippi
• # reviews: 60558
• rating: 99.9%

shipping lightinglam:

• cost: $25.31
• carrier: UPS
• service: UPS Ground
• type: Calculated
• class: Standard
• transit: 3-6 Days

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