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GMC Sierra 2500 HD Trailer Wiring Harness Replacement

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  1. ✓ In Stock 2020-2025 GMC Sierra 2500 HD Battery Fuse Block and Fusible Link Distributor (Used OEM)

    2020-2025 GMC Sierra 2500 HD Battery Fuse Block and Fusible Link Distributor (Used OEM)

    Partslink #: 699-GM8M21

    This is a trailer brake harness.

    Condition: Excellent (A)
    Mileage: 44,600 miles

    $22.95 View part →
  2. ✓ In Stock 2020-2024 GMC Sierra 2500 HD Trailer Brake Wiring Harness (Used OEM)

    2020-2024 GMC Sierra 2500 HD Trailer Brake Wiring Harness (Used OEM)

    Partslink #: SPL-12657287

    This is a trailer brake harness.

    Condition: Excellent (A)
    Mileage: 44,600 miles

    $22.95 View part →
  3. ✓ In Stock 2020-2025 GMC Sierra 2500 HD Battery Fuse Block and Fusible Link Distributor - Rear (Used OEM)

    2020-2025 GMC Sierra 2500 HD Battery Fuse Block and Fusible Link Distributor - Rear (Used OEM)

    Partslink #: 699-GM8M21

    Condition: Good (B)
    Mileage: 75,700 miles

    $79.95 View part →
  4. ✓ In Stock 2020-2024 GMC Sierra 2500 HD Rear Bumper Mounted Trailer Connector Socket (Used OEM)

    2020-2024 GMC Sierra 2500 HD Rear Bumper Mounted Trailer Connector Socket (Used OEM)

    Partslink #: PB-7888-0000228443

    Condition: Good (B)
    Mileage: 90,000 miles

    $135.95 View part →

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Trailer Wiring Harness Compatibility for GMC Sierra 2500 HD

Browse our selection of quality trailer wiring harness parts designed specifically for your GMC Sierra 2500 HD. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.

Available Trims

AT4 · AT4X · Base · Denali · Denali Ultimate · Pro · SLE · SLT

Body Types

Crew Cab Pickup · Extended Cab Pickup · Standard Cab Pickup

Engine Options

V8 6.6L

Transmissions

Automatic

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