Chevrolet Trax Headlight Guide (2013-2025): Halogen, Projector, and LED Differences

Crucial: Three Generations, Three Different Headlights

Before buying a headlight assembly for a Chevrolet Trax, you must correctly identify the vehicle's generation. The headlights are completely different between these groups and are not interchangeable.

• First Generation (Pre-Facelift): 2013-2016
• First Generation (Facelift): 2017-2022
• Second Generation: 2024-2025+

First Generation: 2013-2016

Headlights for the first-generation Trax are the most straightforward. All trim levels (LS, LT, LTZ) in the North American market used the same type of headlight assembly.

Headlight Type: Halogen Reflector

These models are equipped with a standard halogen reflector assembly. This design uses a single dual-filament halogen bulb for both the low and high beams, set inside a chrome-plated bowl (the reflector) that bounces the light forward. These are basic, reliable, and the least expensive type to replace.

• Low Beam Bulb: H11
• High Beam Bulb: 9005

First Generation Facelift: 2017-2022

The 2017 facelift introduced a major compatibility trap. For these years, Chevrolet offered two completely different, non-interchangeable headlight styles based on the vehicle's trim level.

Variant 1: Halogen Reflector (LS Trim)

The base LS trim continued to use a halogen reflector headlight. It looks similar to the earlier generation but has a different shape to fit the updated front fascia. It does NOT have the LED strip for the daytime running light.

• Identifier: No LED strip, basic chrome reflector bowl inside.
• Part Numbers (Halogen): 42771351 (Left), 42771353 (Right)

Variant 2: Halogen Projector with LED DRL (LT, Premier Trims)

The higher LT and Premier trims received an upgraded headlight assembly. This version features a projector lens for the low beam (which looks like a glass bubble or magnifying glass) and a distinctive L-shaped LED Daytime Running Light (DRL) strip along the bottom and side of the housing. Even though it has an LED DRL, the main low and high beams are still halogen bulbs.

• Identifier: Projector lens for the low beam and a prominent LED DRL strip.
• Part Numbers (Projector): 42725480 (Left), 42725481 (Right)

Second Generation: 2024-2025+

The completely redesigned 2024 Trax moved to all-LED lighting, but once again introduced two non-interchangeable versions based on trim level. All headlights in this generation are sealed units; individual LED chips or bulbs cannot be replaced. If any part of the light fails, the entire assembly must be replaced.

Variant 1: Standard LED (LS, 1RS Trims)

The LS and 1RS trims come with full LED headlights, but feature a simpler, less distinct LED Daytime Running Light design.

• Identifier: Plainer LED DRL design.
• Part Numbers (Standard LED): 42865174 (Left), 42865173 (Right)

Variant 2: Signature LED (LT, 2RS, ACTIV Trims)

The LT, 2RS, and ACTIV trims feature an upgraded headlight with a more prominent and stylized 'Signature' LED Daytime Running Light. This is the premium version for this generation.

• Identifier: More complex and brighter 'Signature' LED DRL design.
• Part Numbers (Signature LED): 42928409 (Left), 42928410 (Right)

Symptoms of a Failing Headlight Assembly

• Dim or Yellowed Light Output: The lens has become hazed or yellowed from UV exposure, or the internal reflector has degraded, reducing light output.
• Moisture or Condensation Inside: The seal on the assembly has failed, allowing water to enter. This can cause bulbs to fail repeatedly and will damage the reflective surfaces and electronics over time.
• Flickering or Intermittent Operation: This can be a sign of a failing bulb, a loose connection, or a problem with an internal LED driver or ballast (on applicable models). Some 2024 models have a known issue with flickering caused by a faulty ambient light sensor, addressed by TSB 24-NA-001.
• Dead Bulb(s): While often just a bulb, if new bulbs don't fix the issue, the problem could be the wiring inside the assembly or the connector itself.
• Cracked Lens or Housing: Physical damage from an impact or road debris compromises the assembly's integrity and is a safety hazard.

Buying a Used Headlight Assembly: A Step-by-Step Guide

Buying a used OEM headlight is an excellent way to save money, especially compared to the high cost of new projector and LED units. However, a thorough inspection is critical.

1. Confirm the Generation and Trim: First, match the part to your vehicle's year range (2013-16, 2017-22, or 2024+). Second, confirm the technology: Halogen Reflector, Halogen Projector w/LED DRL, Standard LED, or Signature LED. Use the identifiers in this guide.
2. Check the Lens Condition: Look for deep scratches, stress cracks, or 'crazing' (a network of fine cracks). Severe yellowing or hazing can sometimes be polished out, but a clear lens is always better.
3. Inspect for Internal Moisture: Check for any signs of water lines, fogging, or mineral deposits on the inside of the lens. A previously wet headlight will likely have a corroded reflector and is prone to future failure.
4. CRITICAL: Inspect All Mounting Tabs: Headlight assemblies are held in by several plastic tabs that bolt to the vehicle's frame. These are brittle and often break during even minor accidents or improper removal. A used headlight with even one broken main tab will not sit correctly, leading to a large panel gap and an inability to aim the beam properly. Do not buy a headlight with broken tabs unless you are prepared to use a plastic repair kit.
5. Examine the Housing: Check the black plastic housing on the back for any cracks or damage. This is just as important as the front lens for keeping moisture out.
6. Check the Electrical Connector: Look at the pins inside the main electrical connector. They should be straight and free of any green or white corrosion.
7. Verify Included Components: For halogen units, see if the bulbs and rubber dust covers are included. For 2024+ LED units, the assembly is a single piece. For 2017-2022 projector units, confirm the halogen bulbs are present.

Headlight Assembly Cost Comparison

Note: Prices are estimates per assembly and can vary based on supplier and condition.

Replacement Overview & Alignment

The general process involves:

1. Opening the hood and removing the upper radiator cover/shroud.
2. Removing screws inside the front of each wheel well that attach the bumper to the fender.
3. Removing screws along the bottom edge of the bumper.
4. Carefully pulling the sides of the bumper away from the fender, releasing the clips.
5. Removing the top bolts securing the headlight assembly to the radiator core support.
6. Pulling the assembly forward to access and unbolt the final, lower mounting bolts.
7. Disconnecting the main electrical harness and removing the assembly.

After installation, the headlights MUST be aimed. A misaligned headlight can blind other drivers or fail to illuminate the road properly. Most assemblies have vertical and horizontal adjustment screws on the back, accessible with a Phillips screwdriver or small socket. The proper procedure is to park the vehicle on a level surface 25 feet away from a flat wall and adjust the beam's cutoff line to the height specified in the owner's manual.

Frequently Asked Questions (FAQ)