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Standard Ignition S2639 Headlight Wiring HarnessOE Quality 60-Day Returns
Part #: S2639

Standard Ignition S2639 Headlight Wiring Harness

24 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, Silverado 1500, Silverado 2500 HD, and Silverado 3500 HD
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Not what you need? See all Headlight Wiring Harness options

Headlight Wiring Harness for Silverado Trucks

Restore reliable headlamp power and signal routing with this Standard Ignition headlight wiring harness, part number S2639. It is a direct-fit electrical replacement for select Chevrolet Silverado 1500, Silverado 2500 HD, and Silverado 3500 HD models from 2007-2014.

Key Features

  • Headlight wiring harness for front lighting circuit repair
  • Fits 2007-2014 Chevrolet Silverado 1500
  • Fits 2007-2014 Chevrolet Silverado 2500 HD
  • Fits 2007-2014 Chevrolet Silverado 3500 HD
  • Standard Ignition S2639 replacement part
  • Cross-references Dorman - TECHoice 645-745 for the same application

Detailed Description

The Standard Ignition S2639 headlight wiring harness is built for Silverado trucks that need a dependable replacement for damaged, corroded, or heat-affected headlamp wiring. Use it on 2007-2014 Chevrolet Silverado 1500, 2500 HD, and 3500 HD models when the original harness no longer maintains a stable electrical connection at the headlight circuit. This part number, S2639, is also referenced by other aftermarket listings for the same vehicle applications.

Common Repair Uses

  • Fixes intermittent headlight operation
  • Restores power delivery to a damaged front lighting harness
  • Addresses melted, brittle, or corroded wiring near the headlamp assembly
  • Helps correct connector-related lighting faults on Silverado trucks
  • Supports repair of low-beam or high-beam circuit issues tied to the harness

Installation Notes and Tips

Verify connector style and routing against the original harness before installation. Inspect nearby terminals, grounds, and bulb sockets for heat damage or corrosion so the new harness is not installed into a compromised circuit. Confirm proper headlight function after installation on the Silverado 1500, Silverado 2500 HD, or Silverado 3500 HD application.

Quality Assurance

Standard Ignition is a recognized aftermarket source for electrical replacement parts, and S2639 is listed with confirmed vehicle fitment for the applications shown above.

This part fits 24 vehicles. Search below:

YearMakeModelPositionNotes
2014ChevroletSilverado 1500N/A
2014ChevroletSilverado 2500 HDN/A
2014ChevroletSilverado 3500 HDN/A
2013ChevroletSilverado 1500N/A
2013ChevroletSilverado 2500 HDN/A
2013ChevroletSilverado 3500 HDN/A
2012ChevroletSilverado 1500N/A
2012ChevroletSilverado 2500 HDN/A
2012ChevroletSilverado 3500 HDN/A
2011ChevroletSilverado 1500N/A
2011ChevroletSilverado 2500 HDN/A
2011ChevroletSilverado 3500 HDN/A
2010ChevroletSilverado 1500N/A
2010ChevroletSilverado 2500 HDN/A
2010ChevroletSilverado 3500 HDN/A
2009ChevroletSilverado 1500N/A
2009ChevroletSilverado 2500 HDN/A
2009ChevroletSilverado 3500 HDN/A
2008ChevroletSilverado 1500N/A
2008ChevroletSilverado 2500 HDN/A
2008ChevroletSilverado 3500 HDN/A
2007ChevroletSilverado 1500N/A
2007ChevroletSilverado 2500 HDN/A
2007ChevroletSilverado 3500 HDN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

158416091P425125962806645-745CE1318538CONB11340LS2940PT2641SK645745

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.