SKP SK645035 Tail Light Socket - Left

Tail Light Socket for GMC Sierra

Replace a worn or damaged rear lamp connection with this SKP tail light socket, part number SK645035. It is a direct-fit electrical socket for the left side on select GMC Sierra 1500, Sierra 2500 HD, and Sierra 3500 HD applications.

• Tail light socket for rear lighting repair
• Left-side fitment for select GMC Sierra trucks
• OE cross-reference part numbers: 15824512 and 25906856
• Fits multiple Fleetside and single rear wheel configurations listed below
• SK645035 replacement socket for electrical socket service

Detailed Fitment

Compatible with select GMC Sierra models from 2007-2014, this SK645035 tail light socket is used on the left side and matches the vehicle-specific rear lamp housing applications shown in the fitment data. It is a practical replacement when the original socket is cracked, heat-damaged, corroded, or no longer maintains a secure bulb connection. This part cross-references OE numbers 15824512 and 25906856 for the same application.

• Fits 2014 GMC Sierra 2500 HD, left, 97.6 in. Bed, Fleetside, FLEETSIDE PUBX(E63)
• Fits 2008-2010 GMC Sierra 2500 HD, left, 97.6 in. Bed, Fleetside, FLEETSIDE PUBX(E63)
• Fits 2011-2014 GMC Sierra 3500 HD, left, 97.6 in. Bed, Fleetside, 167.7 in. Wheelbase, SINGLE REAR WHEELS(SRW), FLEETSIDE PUBX(E63)
• Fits 2013 GMC Sierra 1500, left, 143.5 in. Wheelbase
• Fits 2008-2010 GMC Sierra 1500, left, 143.5 in. Wheelbase
• Fits 2011-2013 GMC Sierra 2500 HD, left, 143.5 in. Wheelbase
• Fits 2011-2012 GMC Sierra 1500, left, 97.6 in. Bed, FLEETSIDE PUBX(E63)
• Fits 2007-2010 GMC Sierra 3500 HD, left, 97.6 in. Bed, Fleetside, SINGLE REAR WHEELS(SRW), FLEETSIDE PUBX(E63)
• Fits 2007 GMC Sierra 1500, left, 78.0 in. Bed, Fleetside, Location : Driver Side
• Fits 2007 GMC Sierra 2500 HD, left, 96.0 in. Bed, Fleetside, Location : Driver Side

Common Repair Uses

• Broken or brittle tail light socket housing
• Intermittent rear lamp operation from poor terminal contact
• Heat-related socket damage at the bulb connection
• Corrosion at the rear lighting connector
• Electrical repair after a failed tail lamp socket on a GMC Sierra

Installation Notes

Verify the vehicle’s bed length, wheelbase, and rear lamp configuration before ordering. Match the left-side application exactly to the original socket location on the GMC Sierra 1500, Sierra 2500 HD, or Sierra 3500 HD. Inspect the bulb terminals and connector condition during installation to confirm a secure electrical connection.

Quality Assurance

SKP replacement electrical components are built for direct-fit service on listed applications. Confirm fitment against the vehicle’s original part number and rear lighting configuration before installation.