Details

• Brand:

  

• SKU:

  20840281

• Positions: Left, Rear Left
• Other Names:

  Tail Light Harness

• Description:

  Gmc, without dual rr wheel, 2nd design. Gmc, without dual rr wheels. Durable outer coverings help shield and protect against tough conditions, vibration, abrasions, and moisture
  Wires are color coded correctly for easy installation

  
  

  Driver Side Tail Lamp Wiring Harness - GM Parts Pro (20840281)

  The Driver Side Tail Lamp Wiring Harness - GM Parts Pro (20840281) is a genuine OEM electrical component designed to restore reliable power delivery, signal transmission, and proper operation of the vehicle’s driver-side rear lighting system. Manufactured to GM Parts Pro’s exact factory specifications, this wiring harness provides precise fitment, dependable electrical performance, and seamless integration with the original tail lamp assembly and vehicle wiring system.

  Constructed from high-quality automotive-grade wiring, insulation, terminals, protective coverings, and electrical connectors, this tail lamp wiring harness is engineered to withstand vibration, moisture, heat, temperature fluctuations, road debris, and everyday driving conditions. Its durable construction helps resist corrosion, cracking, abrasion, loose connections, short circuits, and premature electrical failure, supporting reliable long-term operation.

  Functionally, the harness carries electrical current and control signals between the vehicle’s electrical system and the driver-side tail lamp components. Depending on the vehicle application, it may support the brake light, turn signal, parking lamp, reverse lamp, side marker, or other integrated rear-lighting functions.

  The harness is designed specifically for the driver-side tail lamp position, matching the vehicle’s original connector types, wire lengths, terminal configurations, circuit layout, routing points, and attachment locations. Replacing a damaged, melted, frayed, corroded, or malfunctioning harness helps restore consistent rear-lighting performance and reduce intermittent electrical problems.

  As a genuine GM Parts Pro OEM component, this tail lamp wiring harness is manufactured to precise factory electrical specifications, wire gauges, insulation standards, connector requirements, routing configurations, and fitment tolerances. OEM engineering helps ensure dependable electrical compatibility without the cutting, splicing, or modification commonly required by universal aftermarket harnesses.

  Installation is recommended when diagnosing failed tail lamps, flickering lights, corroded connectors, melted terminals, damaged wiring, or electrical issues following collision or rear-body repair work. Professional installation may be recommended to ensure correct routing, secure connections, proper grounding, and dependable lighting operation.

  • Genuine GM Parts Pro OEM driver-side tail lamp wiring harness

  • Restores reliable power and signal delivery to the rear lighting system

  • Supports compatible brake, turn, parking, and reverse lamp functions

  • High-quality automotive-grade wiring and connectors

  • Engineered to resist heat, moisture, vibration, and corrosion

  • Precision-designed for factory routing and secure connections

  • Helps maintain rear visibility, signaling, and OEM functionality

  Choosing the Driver Side Tail Lamp Wiring Harness - GM Parts Pro (20840281) helps restore dependable rear-lighting operation and electrical integrity while delivering the fit, quality, and durability expected from a genuine GM Parts Pro OEM component.

  
  

• Condition: New
• Notes: Included with combo lamp assembly.

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