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ACDelco 20856306 - Front Driver Side ABS Wheel Speed Sensor Wiring Harness

GM Original Equipment


An ACDelco GM Original Equipment ABS Wheel Speed Sensor Wire Harness holds secure against the adverse effects of vibration, abrasions, and moisture. They are the GM recommended replacement for your vehicle’s original components. These original equipment ABS wheel speed sensor wire harnesses have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Availability: Call to check stock.
Shipping: 1 to 3 Day Delivery to Most Locations Within The Continental United States!
Pricing: $26.78


Front Driver Side ABS Wheel Speed Sensor Wiring Harness

Get the GM quality you know and trust with ACDelco GM Original Equipment Wires and Cables products. Stay with the brand of parts your vehicle came with and get peace of mind that the fit, form, and function is up to the high standards and specifications of General Motors. ACDelco GM Original Equipment Wires and Cables are engineered for virtually every model of GM car, light duty truck, and sport utility vehicle.

Warranty: 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see for more details.

Features & Benefits:

  • Heavy duty bindings offer a greater hold against vibration, abrasions, and moisture
  • Protective outer coverings which protect against even the toughest conditions
  • Wires are color coded correctly for easy installation
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function


Q: Is a check engine light a possible sign of a malfunctioning wire harness?
A: Yes. Your vehicle's check engine light may illuminate for several reasons, and one potential cause is a malfunctioning wire harness.

Q: Will a malfunctioning wire harness affect vehicle performance?
A: Not all wire harnesses would be directly related to performance.

Q: Should I change my electronic brake control wire harness when I change my brake pads or brake pad wear sensors?
A: The harness should be inspected and replaced if damaged.

Q: Should I replace my wire harness as opposed to just replacing the connectors?
A: Just replacing connectors requires specialized equipment and should only be attempted by an experienced trained technician.

Maintenance & Troubleshooting

Signs of Wear & Troubleshooting

  • Signs that you might need to replace your ABS wheel speed sensor wire harness are:
    • ABS wheel sensor failure.
    • Failure to stop or brakes locking up during stops.
    • Cracks, gaps, or openings in the wire jacket.
    • Corrosion on the wire, breaks, or cracks in the insulation jacket or outer coating of the wires causing corrosion of the core.
    • Insulation jacket is stiff or contaminated with dirt and oil.
    • Broken or spliced wires or wire core.
    • Failure to stop or problems with your vehicle's braking system.

Good Maintenance Practices

  • Visually inspect wire harness for signs of wear. You can also have the wire windings and wire harness tested by your service technician for opens, shorts, and proper factory specified resistance with an ohmmeter.
  • Terminal Installation:
    • Step 1: Align the terminal and pull the wire from the back of the connector in order to seat the terminal.
    • Step 2: If necessary, cut the new wire to proper length and splice with existing circuit.
    • Step 3: If the connector is outside of the passenger compartment, apply dielectric grease to the connector.
    • Step 4: Install the TPA, CPA and/or the secondary locks.

California Proposition 65

California Prop 65WARNING: Cancer & Reproductive Harm -


  • 20856306
  • 20856306
  • 707773936382
  • ACDelco
  • Call to check stock.
  • New


Shipping Information

  • Item Requires Shipping
  • 0.1 lbs.
  • W3.7000” x H1.0000” x L3.7000”
  • 1 to 3 Day Delivery to Most Locations Within The Continental United States!

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California Residents: Prop 65

WARNING: Cancer and Reproductive Harm -