1999–2007 GMC Sierra 1999–2006 Yukon Chrome Headlight Assembly with Bumper Lights Set

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This 4-piece headlight and bumper light set is a direct replacement for 1999–2007 GMC Sierra and 1999–2006 Yukon trucks with cracked, yellowed, or moisture-damaged factory housings. The chrome housings with clear lenses connect to the factory wiring harness without modification, using 9005 high beam, 9006 low beam, and 3157 turn signal bulbs. T10 amber side marker bulbs are included. Heavy-duty polycarbonate construction and DOT certification mean these meet the same safety standards as the original equipment.

• Fitment:
  For 99-07 GMC Sierra 1500
  For 01-07 GMC Sierra 1500 HD
  For 99-04 GMC Sierra 2500
  For 01-07 GMC Sierra 2500 HD
  For 01-07 GMC Sierra 3500
  For 99-06 GMC Yukon
  For 00-06 GMC Yukon XL 1500
  For 00-06 GMC Yukon XL 2500
  For 2001 GMC Sierra C3
  Does NOT Fit All Denali Trims. For 2007, Fits Classic Models ONLY
• 4-piece set includes two headlight assemblies and two bumper light assemblies (driver and passenger sides)
• Chrome housings with clear lenses and clear corner reflectors
• T10 amber side marker bulbs included (5W 12V)
• Uses 9005 high beam, 9006 low beam, and 3157 turn signal bulbs (not included—transfer factory bulbs or purchase separately)
• Heavy-duty polycarbonate lens construction
• Halogen technology with micro-prism reflector design
• Plug-and-play installation with screw-on mounting—no drilling or wiring modification required
• DOT certified for street-legal use
  

Cross-Reference 

Part number cross-reference: This headlight set is built as a replacement for OEM reference numbers GM2503188, GM2502188, 15850352, 15850351, 15289275, 15289276, 16526135, and 16526136. Brand names and part numbers are used for cross-reference only; this is an aftermarket replacement assembly, not a GM-branded genuine part.

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FAQ – Fitment & Product Details

Q: What trucks does this headlight set fit? A: It fits 1999–2007 GMC Sierra 1500, 1999–2004 Sierra 2500, 2001–2007 Sierra 1500HD/2500HD/3500, 2001 Sierra C3, 1999–2006 Yukon, and 2000–2006 Yukon XL 1500/2500. It does not fit Denali trims, C3 trims, 1999 Sierra with the old body style, or 2007 Sierra with the new body style. For 2007 Sierra trucks, this set fits Classic models only.

Q: What is included in the set? A: You receive a 4-piece set: two headlight assemblies (driver and passenger side) and two bumper light assemblies (driver and passenger side). T10 amber side marker bulbs are also included.

Q: Are bulbs included? A: T10 amber side marker bulbs (5W 12V) are included. The main bulbs—9005 high beam, 9006 low beam, and 3157 turn signal—are not included. You can transfer your factory bulbs or purchase new ones separately.

Q: Is this a direct replacement for the original headlights? A: Yes. These assemblies mount in the factory headlight locations and connect to the factory wiring harness. Installation is plug-and-play with screw-on mounting—no drilling, cutting, or external wiring required.

Q: My old headlights have moisture or condensation inside—will new assemblies fix this? A: New assemblies with intact seals will resolve condensation caused by cracked housings or deteriorated factory seals. If you notice temporary condensation after installation (common after temperature changes), turn on the low beams for about 20 minutes to evaporate moisture. You can also check that the ventilation holes are clear of debris, or place a silica gel packet inside the housing.

Q: My headlights don't turn on at all—will replacing them fix this? A: If your headlights don't turn on, the issue may be electrical rather than the assemblies themselves. Common causes include blown fuses, bad relays, grounding issues, or a faulty headlight control module. New assemblies won't fix vehicle-side electrical problems. If both low beams fail but high beams work, check your fuses and relays first.

Q: How do I adjust the beam angle after installation? A: These assemblies include adjusting screws that let you fine-tune the beam level. After installation, park on a level surface about 25 feet from a wall and adjust until the beam cutoff line sits at the correct height. This ensures proper illumination without blinding oncoming drivers.