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  3. CHEVROLET TGH989

CHEVROLET TGH989 Third Brake Light Lamp 3RD

fits model: Tahoe, Yukon, Suburban. make: Chevrolet. year: 1994–2004.

Tgh989 Chevrolet 1994-2004 Tahoe Yukon Suburban 3rd Third Brake Light Lamp Oem

( Manufacturer Part Number: TGH989 ), ( Type: Third Brake Light Assembly ), ( Fitment Type: Direct Replacement ), ( Housing Color: Black ), ( Lens Color: Red ), ( Placement On Vehicle: Center, Upper )

Review CHEVROLET 3rd Third Brake Light Lamp Oem fits TAHOE YUKON SUBURBAN 1994–2004

The **Chevrolet TGH989 (1994 2004 Tahoe, Yukon, and Suburban) Third Brake Light Lamp** is a precision-engineered, high-quality replacement component designed to restore optimal visibility and safety to your full-size Chevrolet SUV. This lamp is a direct-fit, OE (Original Equipment) equivalent, meticulously crafted to match the exact specifications of the factory-installed unit, ensuring seamless integration with the vehicle s brake light assembly. Engineered with a durable **clear polycarbonate lens**, this lamp is engineered to provide crisp, unobstructed illumination while maintaining resistance to yellowing, cracking, or fogging over time, even under prolonged exposure to harsh environmental conditions. The housing is constructed from robust, corrosion-resistant materials, including a sturdy metal or high-grade plastic frame, which guarantees long-lasting durability and a secure fit within the vehicle s brake light housing. Whether your Tahoe, Yukon, or Suburban requires a single replacement or a full set, this lamp delivers reliable performance, ensuring that your brake signals remain visible and effective for drivers behind you, thereby enhancing overall road safety. Its universal compatibility across the 1994 through 2004 model years makes it an ideal choice for restorers, mechanics, and DIY enthusiasts seeking a hassle-free upgrade without compromising on quality or fit. With its straightforward installation and compatibility with standard automotive wiring, this brake light lamp is a straightforward yet essential component for maintaining your Chevrolet s functionality and compliance with traffic regulations.

### Pros and Cons of Buying a 1994 2004 Chevrolet Tahoe/Yukon/Suburban Third Brake Light Lamp (Part Number TGH989)

#### **Pros:**

1. **Compatibility** The TGH989 is a widely recognized part for the third brake light assembly in the 1994 2004 Chevrolet Tahoe, Yukon, and Suburban models. It is designed to fit directly without modification, making installation straightforward for most mechanics and DIYers.

2. **Durability** Chevrolet s third brake light assemblies from this era were built with sturdy materials, including plastic and metal components. The TGH989 is no exception, offering reliable performance if sourced from a reputable supplier.

3. **Ease of Installation** The part is designed for plug-and-play replacement. It typically requires only basic tools (screwdriver, socket set) and does not require wiring adjustments, as it connects to the existing harness.

4. **Cost-Effective** Compared to labor costs for professional installation, purchasing the part yourself can save money. Prices are generally reasonable, especially when buying from online marketplaces or auto parts stores.

5. **Availability** Due to the popularity of these vehicles, the TGH989 is still widely available through aftermarket suppliers, making it easy to find even years after production ended.

6. **Prevents Code Errors** A faulty or missing third brake light assembly can trigger OBD-I trouble codes (e.g., P0113, P0114 for brake light switch issues). Replacing it resolves these codes and ensures proper brake light function.

7. **Improves Safety** The third brake light (often called the "tail brake light") enhances visibility when braking, reducing the risk of rear-end collisions. A working assembly ensures compliance with traffic laws and improves overall safety.

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#### **Cons:**

1. **Age-Related Wear** Parts from this era may show signs of wear, such as cracked plastic or corroded metal, depending on the condition of the original assembly. If the vehicle has been exposed to harsh conditions (e.g., salt, extreme heat), the new part may still fail prematurely if the mounting area is damaged.

2. **Potential for Counterfeit Parts** Some online sellers offer cheap, low-quality replicas that may not fit properly or last long. Always verify the supplier s reputation and check for authenticity (e.g., look for proper packaging, manufacturer markings).

3. **Additional Repairs May Be Needed** If the original assembly was damaged due to a collision or rust, replacing just the lamp assembly may not fully resolve the issue. The mounting bracket or wiring harness might also need attention.

4. **Compatibility Variations** While the TGH989 is standard for most 1994 2004 models, some trim levels or aftermarket modifications (e.g., lifted suspensions, custom lighting) may require slight adjustments. Always double-check the part number against your vehicle s specific configuration.

5. **Bulb Replacement Still Required** The TGH989 assembly includes the lamp housing but not the bulb itself. You ll need to purchase a compatible brake light bulb (e.g., 12V incandescent or LED) separately, adding to the cost.

6. **Potential for Rust** If the vehicle is from a rust-prone region (e.g., northern states with salted roads), the mounting area for the assembly may corrode over time. Inspect the bracket and wiring for rust before installation to prevent future issues.

7. **Limited Aftermarket Support** Unlike newer vehicles, finding specialized tools or guides for this era can be harder. Some mechanics may charge extra for installation due to the older design.

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### **Conclusion**

The **Chevrolet TGH989 third brake light assembly (1994 2004 Tahoe/Yukon/Suburban)** is a practical and cost-effective solution for restoring proper brake light function in these vehicles. Its compatibility, durability, and ease of installation make it a sound choice for most owners. However, potential buyers should be mindful of the risks of counterfeit parts, additional wear on related components, and the need for separate bulb replacement.

For owners experiencing brake light issues, this part is highly recommended **if sourced from a trusted supplier and installed correctly**. It ensures compliance with traffic laws, improves safety, and avoids unnecessary trouble codes. If the vehicle has significant rust or structural damage, addressing those issues first will extend the lifespan of the new assembly.

### **Recommendation:**

- **Buy from a reputable supplier** (e.g., RockAuto, Amazon with verified sellers, or local auto parts stores) to avoid counterfeit parts.

- **Inspect the mounting area** for rust or damage before installation. Clean and treat corroded metal if necessary.

- **Replace the brake light bulb** at the same time as the assembly to ensure full functionality.

- **Follow installation instructions carefully** refer to a service manual or YouTube guides if needed.

- **Consider professional installation** if unsure about wiring or structural integrity, especially if the vehicle has been in an accident.

For most DIYers, the TGH989 is a straightforward and worthwhile upgrade that balances cost, performance, and reliability.

Details:

Item is tested and in working condition lights up. Good condition. Third brake light taken from a 1999 Chevrolet Suburban.

part #: tgh989 price

  • $49.99

specifications lightinglam:

  • for models: Tahoe, Yukon, Suburban
  • for makes: Chevrolet
  • for years: 1994-2004
  • mpn: Tgh989
  • type: Third Brake Light Assembly
  • fitment type: Direct Replacement
  • housing color: Black
  • lens color: Red
  • placement on vehicle: Center, Upper

shipping lightinglam:

  • service: USPS Ground Advantage
  • class: Standard
  • transit: 4-9 Days
  • carrier: USPS
  • cost: $8.46
  • type: Calculated

returns lightinglam:

  • policy: No Returns

seller lightinglam:

  • city: Portland, Oregon
  • rating: 98.8%
  • # reviews: 85

general lightinglam:

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

payments lightinglam:

  • wallet: Apple-pay
  • credit card: Diners-club
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offer lightinglam:

  • availability: In Stock
  • sold: 0
  • started: February 28, 2026
  • options: Ship-to-home
  • best offers: True
  • quantity: 1
for models: tahoe, yukon, suburban, for makes: chevrolet, for years: 1994-2004, type: third brake light assembly, fitment type: direct replacement, housing color: black, lens color: red, placement on vehicle: center, upper,
category: auto parts > car truck parts accessories > lighting lamps > center third brake light assemblies, sku: 15447046193639713,
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1 offer $49.99 USD
  • Used. Offer #1 priced at $49.99 + $9.14 shipping estimate = $59.13* total. Item is tested and in working condition and lights up good condition.+$9.14 shipping

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