Keep the driver-side tail lamp wired and working with the Standard Ignition Tail Light Wiring Harness S2631, the LEFT-side harness that carries power and ground between the vehicle's wiring and the rear tail lamp assembly. It's a direct-fit replacement for the listed applications, including the 2003-2006 Chevrolet Silverado 1500 [V6-4.3L, V8-4.8L, V8-5.3L, V8-6.0L], 2003-2006 Silverado 2500 HD [V8-6.0L, V8-6.6L, V8-8.1L], 2004-2006 Silverado 3500, and the 2007 Silverado Classic variants — see the Buyer's Guide tab for the full 23-application list.
Over time, heat, moisture, and vibration can corrode terminals or chafe the insulation, which may show up as a dim, flickering, or dead left tail light. If damaged left-side tail light wiring is the cause of that fault, this harness replaces it. Diagnose the circuit before ordering to confirm the wiring — not the bulb, socket, or a body-side fault — is the problem.
Manufacturer part number S2631.
Which side does the S2631 cover?
It is the LEFT (driver-side) tail light wiring harness. For the right side you would need the corresponding right-side harness.
Will this fit my truck?
It's a direct-fit replacement for 23 Chevrolet Silverado applications from 2003-2007, including 1500, 2500 HD, 3500, and Classic models. Check the Buyer's Guide tab for your exact year and engine.
What does a tail light wiring harness do?
It carries power and ground between the vehicle's wiring and the rear lamp, so the tail, brake, and marker signals reach the bulb sockets on that corner.
My left tail light is dim or flickering — will this fix it?
If damaged or corroded left-side tail light wiring is the cause, this harness replaces it. Diagnose the circuit first to rule out a bulb, socket, or body-side fault.
Does it fit both the standard and Classic Silverados?
Yes. It's listed for 2003-2006 Silverado models and the 2007 Silverado Classic variants across the 1500, 2500 HD, and 3500 lines. Confirm your engine on the Buyer's Guide tab.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
