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  2. sku: 15882897706981871
  3. GMC 939256

GMC 939256 Center High Mount Light

fits model: Yukon. make: Gmc. year: 1999.

939256 Gmc Used Center High Mount Stop Light Fits 1999 Yukon Grade A

( Manufacturer Part Number: 939256 ), ( Warranty: 90 Day ), ( Genuine Oem: No ), ( Seller Notes: 3rd Brake Light ), ( Interchange Item Code: 176 ), ( Color: Spruce Green ), ( Type: Center High Mount Stop Light ), ( Partout Id: A-131169005 )

Review GMC Used High Mount Stop Light Grade fits YUKON 1999

The **GMC 939256 Center High-Mount Stop Lamp (CHMSL) for the 1999 Yukon** is a precision-engineered lighting component designed to enhance visibility and safety during low-light driving conditions, particularly in adverse weather or reduced visibility scenarios. This high-quality, factory-specification stop lamp is strategically positioned at the center of the vehicle s rear, above the license plate, ensuring it meets federal and state regulations for aftermarket and replacement applications. Crafted from durable, impact-resistant polycarbonate with a clear, UV-resistant lens, the CHMSL is engineered to withstand the elements while maintaining optimal clarity and brightness. The housing is designed to fit seamlessly into the 1999 Yukon s rear bumper assembly, offering a clean, integrated look that complements the vehicle s original design. When activated, the amber-tinted LED or incandescent bulb (depending on the model variant) illuminates with a consistent, high-intensity glow, providing drivers behind with an unobstructed signal of braking intent, even in heavy rain, fog, or snow. This component is not only a functional upgrade but also a subtle yet effective enhancement to the Yukon s rear lighting system, ensuring compliance with modern traffic safety standards while preserving the vehicle s aesthetic integrity. Ideal for both original equipment replacement (OEM) and customization projects, this CHMSL is a reliable choice for drivers seeking improved visibility and peace of mind on the road.

### **Pros and Cons of Buying a 1999 GMC Yukon with VIN 939256 (Center High-Mount Light)**

#### **Pros**

1. **Reliability and Durability** The 1999 GMC Yukon, particularly with a 5.3L V8 engine (common in this model year), is known for its robust construction and strong towing capacity. Many owners report that these trucks hold up well over high mileage if properly maintained.

2. **Center High-Mount Light (CHML)** This feature improves visibility for other drivers, especially in low-light conditions, making the truck safer on highways and rural roads. It s a standard or optional feature in many full-size trucks of this era.

3. **Spacious Interior and Cargo Capacity** The Yukon offers ample seating (up to 8 passengers in some configurations) and a large cargo area, making it practical for families, hauling equipment, or road trips.

4. **Available 4WD System** If equipped with four-wheel drive, this truck can handle off-road conditions, snow, or rough terrain better than a 2WD model.

5. **Potential for Customization** Many 1999 Yukons are still drivable and can be modified or restored with aftermarket parts, allowing owners to tailor the vehicle to their needs.

6. **Lower Purchase Price Compared to New Models** Used trucks from this era are significantly cheaper than new full-size SUVs, offering good value for the money.

7. **Proven Engine Options** The 5.3L V8 (with or without 4L60E/4L65E transmission) is a reliable powerplant if maintained. The 7.4L V8 (in some trims) is also durable but may require more frequent maintenance.

8. **Parts Availability** Being a GM product from the late '90s, replacement parts (engines, transmissions, suspension components) are still widely available, though some may be slightly more expensive than OEM parts for newer vehicles.

---

#### **Cons**

1. **Age and Mileage Concerns** A 1999 model is nearly 25 years old, meaning it has likely accumulated significant mileage. Without thorough maintenance records, major components like the transmission, suspension, and drivetrain may be worn out.

2. **Fuel Efficiency** The V8 engines in this truck are not fuel-efficient by modern standards, averaging around **12 15 MPG combined**. Higher mileage models will consume even more fuel.

3. **Outdated Safety Features** Unlike today s trucks, the 1999 Yukon lacks modern safety tech such as:

- Electronic stability control (ESC)

- Advanced airbag systems

- Blind-spot monitoring

- Lane-keeping assist

- Modern crash-test ratings (NHTSA ratings are from an older era)

4. **Transmission Issues** The 4L60E/4L65E automatic transmissions (common in this truck) are known for failing over time, especially if fluid changes were neglected. A rebuilt or replaced transmission can be costly.

5. **Rust Concerns** Many older GM trucks from the '90s suffer from rust, particularly in the wheel wells, frame rails, and undercarriage. A thorough inspection is critical to avoid hidden corrosion damage.

6. **Electrical Problems** Aging wiring, faulty sensors, and computer issues (e.g., check engine lights, ABS failures) are common in vehicles this old. Electrical gremlins can be difficult and expensive to diagnose.

7. **Resale Value** Unlike newer trucks, this model will depreciate further over time, and parts may become harder to find as GM phases out older platforms.

8. **Emissions and Modern Regulations** Some states have stricter emissions standards, and older trucks may not meet modern requirements, potentially leading to higher inspection costs or restrictions.

9. **Comfort and Modern Amenities** The ride quality, infotainment, and climate control systems are outdated compared to today s trucks. Features like Bluetooth, USB ports, and advanced climate controls are absent.

10. **Potential for Hidden Repairs** Without a detailed service history, buyers may inherit unexpected repair costs for:

- Suspension (ball joints, bushings, shocks)

- Exhaust system (leaks, rust)

- Cooling system (water pump, thermostat, hoses)

- Drivetrain (transfer case in 4WD models)

---

### **Conclusion**

The **1999 GMC Yukon with a CHML (VIN 939256)** can be a **good used purchase** if you prioritize **durability, towing capacity, and low upfront cost** while being prepared for **potential maintenance issues**. It is well-suited for buyers who:

- Need a **reliable work or family truck** for basic hauling.

- Are willing to **budget for repairs** (transmission, suspension, electrical).

- Prefer **mechanical simplicity** over modern tech.

- Can **inspect the vehicle thoroughly** (or have a trusted mechanic do so) before buying.

However, if you want **better fuel economy, modern safety features, lower long-term costs, or a more comfortable ride**, a **newer used truck (2010 or later)** would be a far better investment. The 1999 Yukon is **not ideal for daily drivers** who expect convenience and reliability without major upkeep.

---

### **Recommendation**

**Buy this truck only if:**

You **find a well-documented example** with **full service records**, preferably under **150,000 miles** (or lower if over 200K).

You **inspect it professionally** (or have mechanical expertise) to check for:

- Transmission fluid condition

- Suspension and steering components

- Rust in critical areas

- Electrical system functionality

- Cooling system integrity

You **budget for potential repairs** (expect **$2,000 $5,000 ** in unexpected fixes within the first year if not already addressed).

You **plan to use it for occasional driving** (not daily commuting) and **don t mind older tech**.

**Avoid this truck if:**

You **need a reliable, low-maintenance vehicle** for daily use.

You **can t afford major repairs** (transmission, suspension, electrical).

You **prioritize fuel efficiency, modern safety, or comfort**.

You **don t have access to a pre-purchase inspection** by a trusted mechanic.

**Alternative Considerations:**

- A **2005 2010 GMC Yukon Denali** (with better safety and tech) may offer a better balance.

- A **used Ford Expedition or Chevrolet Tahoe** from the same era could be worth comparing.

- If you **only need a truck for towing**, consider a **used Ram 2500/3500 (2010 )** for better modern reliability.

**Final Verdict:**

This **1999 GMC Yukon can be a solid buy for the right buyer** someone who **values durability over convenience** and is **prepared for maintenance**. However, it is **not a "set-and-forget" vehicle** and requires **due diligence** before purchase. If you re looking for a **long-term, hassle-free truck**, a newer used model is the smarter choice.

Details:

Orders placed after 2:00 pm CST cannot be guaranteed shipping that day. This part fits vehicles made in the following years 1999. Superseded Part Numbers This item may have been superseded from a different part number this manufacturer. All parts are covered by warranty.

Every part is cleaned, tested and inspected by experts. Original parts mean a perfect fit. Parts go back into cars rather than landfill. Unless specified as Universal this is a direct fit High Mount Stop Light.

part #: 939256 prices

  • $28.27-$129.55

specifications lightinglam:

  • for models: Yukon
  • for makes: Gmc
  • for years: 1999
  • mpn: 939256
  • warranty: 90 Day
  • genuine oem: No
  • seller notes: 3rd Brake Light
  • interchange item code: 176
  • color: Spruce Green
  • type: Center High Mount Stop Light
  • partout id: A-131169005

general lightinglam:

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

payments lightinglam:

  • wallet: Paypal
  • other
  • credit card: Diners-club

seller lightinglam:

  • # reviews: 6895
  • city: Mobile, Alabama
  • rating: 99.5%

offer lightinglam:

  • started: June 3, 2026
  • options: Ship-to-home
  • sold: 0
  • quantity: 1
  • availability: In Stock

returns lightinglam:

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

shipping lightinglam:

  • cost: $0.00
  • carrier: FedEx, USPS
  • transit: 3-7 Days
  • service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, USPS Ground Advantage
  • type: Fixed
  • class: Standard, Expedited
for models: yukon, for makes: gmc, for years: 1999, warranty: 90 day, genuine oem: no, seller notes: 3rd brake light, interchange item code: 176, type: center high mount stop light, partout id: a-131169005,
manufacturer: gmc, category: auto parts > car truck parts accessories > lighting lamps > center third brake light assemblies, color: spruce green, sku: 15882897706981871,
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2 offers $28.27–$129.55 USD
  • Used. Offer #1 priced at $28.27 + $0.00 shipping estimate = $28.27* total. FREE SHIPPING
  • Used. Offer #2 priced at $129.55 + $10.00 shipping estimate = $139.55* total. +$10.00 shipping

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