TYC 18-3414-01 Side Marker Light - Front Left

Front Left Side Marker Light for GMC Trucks

Restore the front left exterior lighting on select GMC trucks and SUVs with this TYC Regular side marker light. Built with an amber plastic lens and plastic housing, this replacement is made for vehicles equipped with composite headlamps and uses a snap-in attachment for a direct-style service replacement.

Fits 1988-1993 GMC C1500, front left; fits 1992-1993 GMC C1500 Suburban, front left; fits 1988-1993 GMC C2500, front left; fits 1992-1993 GMC C2500 Suburban, front left; fits 1988-1993 GMC C3500, front left; fits 1988-1993 GMC K1500, front left; fits 1992-1993 GMC K1500 Suburban, front left; fits 1988-1993 GMC K2500, front left; fits 1992-1993 GMC K2500 Suburban, front left; fits 1988-1993 GMC K3500, front left; fits 1992-1993 GMC Yukon, front left.

Key Features

• TYC Regular replacement side marker light for the front left position
• Amber lens color for exterior marker visibility
• Plastic lens and plastic housing construction
• Snap-in attachment method for OE-style mounting
• Halogen bulb type specification for the front side marker light circuit
• Lens and housing included; bulbs not included
• For vehicles with composite headlamps
• Cross-reference part numbers include GMC 5975199 and Partslink GM2550141

Detailed Description

TYC 18-3414-01 is a front left side marker light assembly for select 1988-1993 GMC C/K trucks and 1992-1993 GMC Suburban and Yukon applications. The amber lens, plastic housing, and snap-in design match the needs of composite-headlamp front-end lighting layouts, making this a practical replacement for damaged, faded, or missing marker lamps. The part number 18-3414-01 is also referenced for the opposite side as 18-3413-01, and this unit cross-references GMC 5975199 and Partslink GM2550141 for the same application.

TYC Regular identifies the brand’s standard replacement line for common exterior lighting service parts, focused on direct-fit repair coverage for everyday maintenance and collision repair work. For shoppers searching for a GMC C1500 front left side marker light, GMC K1500 amber marker lamp, or a replacement side marker light for composite headlamps, this part number 18-3414-01 provides the correct fitment path for the listed vehicles.

Common Problems This Part Can Address

• Cracked or broken front left side marker lens
• Faded amber lens that reduces exterior lighting appearance
• Missing or loose marker light assembly after front-end repair
• Housing damage from road debris or age-related plastic wear
• Incorrect marker lamp on GMC C/K truck or Yukon composite-headlamp applications

Installation Notes and Tips

Verify that the vehicle is equipped with composite headlamps before ordering. Confirm the front left position and compare the existing lamp to the opposite side part number 18-3413-01 for proper side matching. Bulbs are not included, so transfer or replace the front side marker bulb as needed during installation. The snap-in design supports straightforward replacement when the original mounting points are intact.

Quality Assurance

This TYC Regular lighting component is built as a replacement exterior body lamp for the listed GMC applications and is identified by OE and aftermarket cross-reference numbers for fitment verification. Use the vehicle year, make, model, and front left position to confirm application before installation.