GMC TRUCK 176.GM9421 High Light 12463634

( Brand: Gmc Truck ), ( Part Type: Light Stop ), ( Conditions Options: Xcab, A ), ( Genuine Oem: Yes ), ( Ipn: 176.gm9421 )

Review GMC TRUCK High Mounted Stop Light fits CANYON 2021

The **GMC Canyon 2021 (VIN 176GM9421) with the High Country package (trim code 12463634)** is a rugged, versatile midsize pickup truck engineered to deliver an exceptional blend of performance, comfort, and off-road capability, making it an ideal choice for adventurers, professionals, and everyday drivers alike. Built on the durable **T17 platform**, this model features a **5.3L EcoTec3 V8 gasoline engine** paired with an **8-speed automatic transmission**, producing a robust **355 horsepower and 390 lb-ft of torque**, ensuring strong towing and hauling power while maintaining smooth, responsive acceleration. The High Country trim elevates the Canyon s functionality with a suite of premium features, including a **12-inch touchscreen infotainment system** with **Apple CarPlay and Android Auto**, a **10.1-inch digital gauge cluster**, and **GMC s Bedside Storage System**, which provides convenient access to tools and gear without leaving the cab. The **17-inch steel wheels** with **P265/65R17 tires** offer a balanced mix of on-road comfort and off-road traction, while the **standard four-wheel drive (4WD) system** with **low-range gearing** unlocks serious off-road potential, making it capable of tackling trails, gravel roads, and light rock crawling with confidence.

Inside, the cabin exudes a refined yet utilitarian aesthetic, with **black-dial instrumentation**, **cloth-trimmed seats**, and **power-adjustable, heated front seats** for enhanced comfort during long drives or rugged excursions. The **dual-zone automatic climate control** ensures consistent temperature regulation, while the **available **GMC s **Bedside Storage System** and **cargo management system** optimize space efficiency, allowing for easy organization of tools, camping gear, or daily essentials. Safety is prioritized with **standard stability control, traction control, and a rearview camera**, while optional **GMC s **Trailering Assist** and **Off-Road Traction Management** systems further refine the truck s adaptability, providing real-time feedback and control for both on-road and off-road scenarios. The **standard **GMC s **Bedside Storage System** and **available **GMC s **Bedside Storage System** also contribute to a more organized and functional workspace, whether you're loading gear for a weekend trip or running errands.

Externally, the Canyon s **bold, angular styling** highlighted by **LED headlights and taillights**, **blacked-out grille accents**, and **available **GMC s **Bedside Storage System** gives it a commanding presence on the road. The **standard **GMC s **Bedside Storage System** and **available **GMC s **Bedside Storage System** ensure that the truck remains both practical and visually striking, whether parked in a suburban driveway or navigating a rugged trail. With a **standard **5.3L V8 engine** and **8-speed automatic transmission**, this Canyon delivers a seamless driving experience, blending power with efficiency, while the **High Country package** ensures that every detail from the **12-inch touchscreen** to the **10.1-inch digital gauges** is thoughtfully integrated for both utility and luxury. Whether you're hauling heavy loads, conquering off-road challenges, or simply enjoying the open road, this **2021 GMC Canyon (VIN 176GM9421) with the High Country trim** stands as a testament to GMC s commitment to building trucks that are as capable as they are comfortable.

### **Pros and Cons of Buying a 2021 GMC Canyon 176.gm9421 (High Country 12463634)**

#### **Overview**

The 2021 GMC Canyon is a mid-size pickup truck known for its durability, off-road capability, and comfortable ride. The **176.gm9421** VIN corresponds to a **High Country trim** (likely with a **2.7L EcoTec3 Turbo 4-cylinder engine**, **8-speed automatic transmission**, and **4x4 capability**). This model is well-suited for those needing a reliable work truck, an adventure vehicle, or a daily driver with rugged versatility.

---

### **Pros**

1. **Strong Engine and Performance**

- The **2.7L EcoTec3 Turbo 4-cylinder** produces **270 horsepower and 331 lb-ft of torque**, providing solid acceleration and towing capacity (up to **5,000 lbs with a heavy-duty package**).

- The **8-speed automatic transmission** offers smooth shifting and efficient fuel economy compared to older manual or 6-speed automatics.

2. **Good Towing and Hauling Capacity**

- The **High Country trim** is designed for utility, with a **standard 6.5-foot cargo box** (expandable to 8.2 feet) and **heavy-duty suspension** for better load handling.

- With optional **towing packages**, it can tow **up to 5,000 lbs** (when properly equipped), making it suitable for small trailers or light equipment.

3. **Off-Road Capability**

- Comes standard with **4WD (Dual-Front-Rear Differential, DFRD)**, **trailering brakes**, and **off-road tuned suspension**.

- Optional **Off-Road Package** includes **skid plates, all-terrain tires, and a locking rear differential**, enhancing its capability in rough terrain.

4. **Comfortable Interior**

- **Uplift-style interior** with **soft-touch materials**, **power-adjustable driver s seat**, and **heated front seats** (on higher trims).

- **8-inch touchscreen infotainment** with **Apple CarPlay and Android Auto**, though some users report occasional lag.

- **Available ventilated front seats** and **ambient lighting** for a more premium feel.

5. **Reliability and Resale Value**

- GMC s **Duramax diesel engines** (if available in future models) are known for longevity, but the **2.7L turbo gas engine** is also durable with proper maintenance.

- The **High Country trim** holds its value reasonably well compared to base models, especially if well-maintained.

6. **Safety Features**

- Standard **StabiliTrak stability control**, **traction control**, and **multiple airbags**.

- **Available safety tech** includes **forward collision alert, blind-spot monitoring, and rear cross-traffic alert**, which are helpful for a truck of this size.

7. **Fuel Efficiency (Compared to V8 Trucks)**

- The **2.7L turbo engine** gets **better MPG ( 18 city / 24 highway)** than a V8, making it more economical for daily driving and light towing.

8. **Durability and Build Quality**

- GMC s **body-on-frame construction** ensures a sturdy, long-lasting truck.

- The **High Country trim** is built for work, with **heavy-duty suspension, frame rails, and cooling systems** for demanding use.

---

### **Cons**

1. **Turbocharged Engine Reliability Concerns**

- The **2.7L EcoTec3 turbo engine** is known for **oil dilution issues in cold climates** (common in turbocharged GM engines), which can lead to **starting problems and long-term wear**.

- Some owners report **carbon buildup on intake valves** if oil changes are neglected, requiring **expensive maintenance** (intake valve cleaning or replacement).

2. **Transmission Issues (8-Speed Automatic)**

- Early models of the **8-speed transmission** had **rough shifting and delayed engagement**, though GMC improved this in later years.

- Some users report **premature wear** if the truck is frequently towed or driven aggressively.

3. **Comfort vs. Ruggedness Trade-Off**

- The **High Country trim** is **softer than a rugged off-road model** (like the Denali or Trail Boss), meaning it may not handle **extreme off-roading** as well.

- **Suspension is tuned for comfort**, which can make the truck feel **less agile on rough terrain** compared to competitors like the **Ford Ranger or Toyota Tacoma**.

4. **Infotainment System Limitations**

- The **8-inch touchscreen** is functional but **not as smooth or intuitive** as some competitors (e.g., Ford s SYNC 4).

- **Bluetooth connectivity can be unreliable**, and **wireless charging is not standard**.

5. **Resale Depreciation**

- Like most trucks, the **Canyon loses value quickly**, especially if not well-maintained.

- The **High Country trim is not as premium as the Denali**, so resale may not be as strong.

6. **Cargo Space Limitations**

- The **6.5-foot bed is standard**, but **expanding to 8.2 feet requires an extra cost**.

- **Bed liner quality** is **basic plastic** (not as durable as vinyl or bedliner coatings), which can scratch easily.

7. **Noise and Wind Noise**

- Some owners report **excessive wind noise at highway speeds**, especially with the **soft-top cab**.

- **Engine and transmission noise** can be noticeable in the cabin, though not extreme.

8. **Maintenance Costs**

- While the **2.7L turbo engine is reliable**, **oil changes must be done on schedule** (every **5,000 miles** in cold climates) to prevent **carbon buildup and turbo failure**.

- **Transmission fluid changes** are recommended every **60,000 miles** to avoid long-term issues.

---

### **Conclusion**

The **2021 GMC Canyon High Country (176.gm9421)** is a **solid mid-size truck** that excels in **utility, towing, and off-road capability** while offering a **comfortable ride**. It is well-suited for:

- **Workers needing a reliable hauler** (construction, farming, light towing).

- **Adventure seekers** who want **4WD without going full off-road**.

- **Daily drivers** who prioritize **fuel efficiency over raw power**.

- **Turbo engine maintenance requirements** (oil changes, carbon buildup risks).

- **Transmission reliability** (early models had shifting issues).

- **Comfort over ruggedness** (not as capable as a Denali or Trail Boss).

If **proper maintenance is followed**, this truck can be a **long-lasting and capable vehicle**. However, if **extreme off-roading or heavy-duty towing** is a priority, a **higher trim (Denali) or a different brand (Toyota Tacoma, Ford Ranger)** might be worth considering.

---

### **Recommendation**

You need a **reliable, fuel-efficient work truck** with **good towing (up to 5,000 lbs)**.

You want **4WD capability** for light off-roading or snow driving.

You re willing to **maintain the turbo engine properly** (frequent oil changes, especially in cold climates).

You prefer a **comfortable, daily-driver-friendly truck** over a purely rugged model.

You require **extreme off-road performance** (consider a Denali or Trail Boss).

You **neglect maintenance**, as the turbo engine is **prone to issues** if not cared for.

You need **maximum towing (over 5,000 lbs)** without heavy-duty upgrades.

You dislike **turbocharged engines** due to potential reliability concerns.

The **2021 GMC Canyon High Country (176.gm9421)** is a **good mid-size truck** for those who want **versatility, comfort, and decent towing** without the expense of a full-size pickup. **With proper maintenance, it can last 200,000 miles**, but buyers should be prepared for **higher-than-average upkeep costs** compared to naturally aspirated engines. If you find a **well-documented vehicle with a clean service history**, it is a **solid purchase**. Otherwise, consider a **used Denali or a different brand** if ruggedness is a priority.

Details:

Labor and costs associated with part installation are not covered under warranty.

part #: 176.gm9421 prices

• $71.02-$90.00

specifications lightinglam:

• for models: Canyon
• for makes: Gmc
• for years: 2021
• brand: Gmc Truck
• part type: Light Stop
• conditions options: Xcab, A
• genuine oem: Yes
• ipn: 176.gm9421

offer lightinglam:

• started: May 4, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• best offers: True
• sold: 0

general lightinglam:

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

returns lightinglam:

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

seller lightinglam:

• rating: 99.9%
• # reviews: 50126
• city: Spokane, Washington

payments lightinglam:

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

shipping lightinglam:

• carrier: FedEx
• transit: 3-7 Days
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• class: Standard
• type: Fixed

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