1. Sunroof, Convertible & Hardtop Auto Parts For Sale
  2. sku: 16166485419822782
  3. GMC TRUCK TERRAIN

GMC TRUCK 628.GM9H18 Roof Motor

fits model: Terrain. make: Gmc. year: 2018.

628.gm9h18 Gmc Truck Terrain 2018 Roof Motor 8601424

( Brand: Gmc Truck ), ( Part Type: Motor ), ( Conditions Options: Rear Sunroof Motor ), ( Genuine Oem: Yes ), ( Ipn: 628.gm9h18 ), ( Warranty: 1 Year )

Review GMC TRUCK Roof Motor fits TERRAIN 2018

The **GMC 628.GM9H18 Terrain 2018 Roof Motor** is a high-performance, precision-engineered electric actuator designed specifically for the 2018 GMC Terrain, serving as the primary component responsible for the seamless operation of its power-adjustable roof system. This robust motor combines cutting-edge automotive technology with durable construction to deliver smooth, reliable, and silent functionality, enhancing both convenience and luxury for the vehicle s occupants. Built to GMC s stringent quality standards, this roof motor features a compact yet powerful design, incorporating a high-efficiency brushless DC motor paired with a sophisticated gear reduction system to ensure precise control over the roof s movement whether fully open, fully closed, or in any intermediate position. The motor operates within a temperature range of -40 F to 185 F (-40 C to 85 C), making it well-suited for extreme climates, while its corrosion-resistant materials and sealed housing protect against environmental contaminants, moisture, and road debris, ensuring longevity even in demanding conditions. Engineered with a fail-safe mechanism, the motor includes built-in sensors and electronic controls that detect obstructions, preventing damage to the roof or surrounding components while providing smooth, jamming-free operation. Whether used in urban driving, highway cruising, or off-road adventures, this roof motor integrates seamlessly with the Terrain s infotainment and climate control systems, allowing for intuitive voice-activated or touchscreen-controlled adjustments. With a lifespan designed to match the durability of the GMC Terrain itself, this roof motor exemplifies the brand s commitment to performance, reliability, and driver-centric innovation.

### Pros and Cons of Buying a 2018 GMC Terrain (628.GM9H18, Roof Motor)

#### **Pros:**

1. **Reliability and Build Quality** The 2018 GMC Terrain is built on a solid platform shared with Chevrolet, ensuring good durability and a reputation for longevity. The 2.5L turbocharged engine (LFE) is known for being robust, especially when well-maintained.

2. **Fuel Efficiency** The 2.5L turbo engine paired with an automatic transmission delivers decent fuel economy for a compact SUV. The EPA-rated MPG is around **23 city / 30 highway** for the automatic model, which is competitive for its class.

3. **Comfortable Ride** The Terrain offers a smooth ride on highways and city streets, thanks to its well-tuned suspension and sound insulation. The interior is spacious and quiet, making it a comfortable choice for daily driving.

4. **Good Safety Features** The 2018 model comes standard with **Stabilitrak (ESC), traction control, and multiple airbags**. Optional safety tech like **Forward Collision Alert, Lane Keep Assist, and Blind Spot Monitoring** (available in higher trims) adds extra protection.

5. **Affordable Maintenance Costs** Compared to some luxury or high-performance SUVs, the Terrain has relatively low maintenance expenses. The turbo engine requires occasional attention, but overall, it s cost-effective to keep running.

6. **Versatile Interior Space** The cabin provides ample seating for five, with decent cargo room (31.6 cu. ft. behind seats, expandable to 69.5 cu. ft. with seats folded). The layout is practical for families or road trips.

7. **Available Tech Features** Depending on the trim, you can find **Apple CarPlay, Android Auto, a 7-inch touchscreen, and a backup camera**, which enhance convenience and connectivity.

8. **Resale Value** GMC SUVs hold their value reasonably well, and the Terrain is no exception. With proper care, it retains a decent resale price compared to similar vehicles.

9. **Off-Road Capability (SLT & Above Trims)** Higher trims like the **SLT or Denali** come with **all-wheel drive (AWD), skid plates, and a higher ground clearance**, making them more capable for light off-roading or winter driving.

10. **Good Warranty Coverage** The 2018 model comes with **a 3-year/36,000-mile basic warranty and a 5-year/60,000-mile powertrain warranty**, providing peace of mind for potential buyers.

---

#### **Cons:**

1. **Turbocharged Engine Reliability Concerns** While the 2.5L turbo engine is generally reliable, turbochargers can fail if not properly maintained (oil changes, cooling system checks). Some owners report **carbon buildup issues** if the engine isn t serviced regularly.

2. **Transmission Issues (6T70 Automatic)** The standard **6-speed automatic transmission** has had some complaints about **rough shifting, delayed engagement, or premature wear**, particularly in older models. Some owners report needing early transmission repairs.

3. **Interior Quality Varies by Trim** Lower trims (like the **LS or LT**) have **plastic-heavy interiors** that feel less premium. Higher trims (SLT, Denali) improve with **better materials and sound insulation**, but even then, it doesn t match luxury SUVs.

4. **Rear Seat Comfort** The rear seats are **narrow and less supportive** for adults, making long drives uncomfortable for passengers. The legroom is adequate but not exceptional.

5. **Resale Depreciation** Like most SUVs, the Terrain loses value quickly. If you plan to keep it long-term, factor in depreciation when budgeting.

6. **Noisy Cabin (Some Models)** A few owners report **wind or road noise** entering the cabin, especially on highway speeds, though this varies by model year and trim.

7. **Limited Off-Road Performance (Base Models)** The **base models (LS/LT)** lack features like **skid plates, locking differentials, or higher ground clearance**, making them less suitable for serious off-roading.

8. **Infotainment System Lag** The **7-inch touchscreen** can sometimes be slow to respond, and the **Bluetooth connectivity** has had minor glitches in past years.

9. **Fuel Economy Drop in AWD Models** The **all-wheel-drive versions** see a slight drop in fuel efficiency, reducing highway MPG by about **2-3 miles per gallon**.

10. **Potential Rust Issues** Older GMCs (including this model year) have had **rust concerns** in certain regions, particularly on wheel wells and undercarriage. A thorough inspection is recommended before purchase.

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### **Conclusion:**

The **2018 GMC Terrain (628.GM9H18, Roof Motor)** is a **solid mid-size SUV** that offers a good balance of **practicality, fuel efficiency, and comfort** for daily driving. It s a **great choice for buyers who prioritize reliability, space, and affordability** without needing luxury features.

However, **potential buyers should be aware of the turbo engine s maintenance needs, transmission reliability concerns, and interior quality variations**. If you **prioritize off-roading or luxury**, you may want to consider higher trims or newer models. For **budget-conscious buyers who want a dependable SUV**, the Terrain remains a **strong option** especially if well-maintained.

---

### **Recommendation:** - **Buy if:**

- You need a **practical, fuel-efficient SUV** for daily commuting and light adventures.

- You **prioritize reliability and low maintenance costs** over luxury features.

- You **plan to keep it for 5-7 years** and can afford occasional turbo/transmission servicing.

- You **find a well-documented vehicle** with **full service records**, preferably in **SLT or Denali trim** for better features.

- **Avoid if:**

- You **require heavy off-roading** (consider a **Trailblazer or Subaru Forester** instead).

- You **dislike turbocharged engines** due to maintenance concerns.

- You **expect a premium interior** (look at **Toyota Highlander or Honda Pilot** for better build quality).

- You **cannot afford potential transmission or turbo repairs** down the line.

**Final Verdict:** The **2018 GMC Terrain is a sound purchase for the right buyer** one who values **practicality, fuel savings, and durability** over flashy features. Always **get a pre-purchase inspection** and **verify maintenance history** before buying.

Details:

Image shown may be the vehicle from which part was pulled, or a generic image representing typical stock, rather than unique item being sold. More Parts: 1 Year Warranty. Model: TERRAIN. TERRAIN 2018 Roof Motor 8601424: REAR SUNROOF MOTOR Included: Hassle-free 1 Year Warranty Our Part #: 8601424.

Free shipping only applies to items you keep. Warranty HASSLE-FREE 1 YEAR WARRANTY: All parts are warrantied for a period of 12 months or year from the purchase date. Shipping Damage:: Damages and evidence of tampering on the outer packaging must be noted delivery receipt by driver. Easy to find parts that don't require a mechanics knowledge.

If something is wrong with an order, we certainly do want to help you. Quality, Assured Parts All are Quality Tested Inspected. Please compare part numbers BEFORE purchasing. Please disregard other fitment charts they may not be correct.

Very happy customer, excellent value and service.

part #: 628.gm9h18 price

  • $125.00

specifications sunroofconverti:

  • for models: Terrain
  • for makes: Gmc
  • for years: 2018
  • brand: Gmc Truck
  • part type: Motor
  • conditions options: Rear Sunroof Motor
  • genuine oem: Yes
  • ipn: 628.gm9h18
  • warranty: 1 Year

general sunroofconverti:

  • Exterior Parts Accessories > Roofs, Tops Sunroofs > Sunroofs Parts
  • condition: Used

payments sunroofconverti:

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

returns sunroofconverti:

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

offer sunroofconverti:

  • options: Ship-to-home
  • sold: 0
  • started: March 24, 2026
  • best offers: True
  • quantity: 1
  • availability: In Stock

seller sunroofconverti:

  • rating: 97.2%
  • # reviews: 23198
  • city: Rancho Cordova, California

shipping sunroofconverti:

  • class: Freight
  • service: Flat Rate Freight
  • type: Fixed
  • cost: $20.00
for models: terrain, for makes: gmc, for years: 2018, part type: motor, conditions options: rear sunroof motor, genuine oem: yes, warranty: 1 year,
manufacturer: gmc, category: auto parts > exterior parts accessories > roofs, tops sunroofs > sunroofs parts, sku: 16166485419822782,
Gmc Truck 8601424 Is Similar To:
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2 offers $125.00–$125.00 USD
  • Used. Offer #1 priced at $125.00 + $25.00 shipping estimate = $150.00* total. *OPEN FOR IMPORTANT FITMENT INFO*.+$25.00 shipping
  • Used. Offer #2 priced at $125.00 + $25.00 shipping estimate = $150.00* total. +$25.00 shipping

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