by RIGNOX
Sep / 17 / 2026

2003-2006 Chevrolet Silverado, 2007 Silverado Classic & 2003-2006 Avalanche LED Triple Projector Headlights Installation Guide

Step-by-step RIGNOX installation guide for the 2003-2006 Chevy Silverado, 2007 Silverado Classic and 2003-2006 Avalanche four-piece LED headlight kit. Covers tools, removal, headlight and bumper lamp installation, function test, and troubleshooting notes.

2003-2006 Chevrolet Silverado, 2007 Silverado Classic & 2003-2006 Avalanche LED Triple Projector Headlights installed view

Important: This online guide is a product-side overview for the matched RIGNOX product. It covers what is in the box, how the kit is wired, and what to check before and after fitting. Confirm hidden vehicle-side fasteners, trim clips, and wiring access points on your exact vehicle before removal.

Safety warning: Do NOT use dielectric grease or weather-sealing grease on connectors or sockets. Grease can cause connection problems and may affect warranty coverage.

Matched product

  • Product: 2003-2006 Chevrolet Silverado, 2007 Silverado Classic & 2003-2006 Avalanche LED Triple Projector Headlights Assembly
  • Product type: headlights
  • SKU: H-SIL03
  • Fitment: 2003-2006 Chevrolet Silverado 1500, 2500 and 3500, including HD models; 2007 Chevrolet Silverado 1500, 2500 and 3500 Classic, including HD (Classic models only); 2003-2006 Chevrolet Avalanche 1500 and 2500. Does not fit the 2007 non-Classic Silverado or Avalanche models with factory body cladding.
  • In the box: Two headlight assemblies and two bumper park / turn lamps — four pieces.
  • Product page: View matching RIGNOX product details

Product reference images

Use these images to compare the lamp shape, rear housing, visible plug layout, and lighting functions before final assembly.

2003-2006 Chevrolet Silverado, 2007 Silverado Classic & 2003-2006 Avalanche (GMT800) LED Triple Projector Headlights Assembly — 4-Piece Kit — main — H-SIL03
2003-2006 Chevrolet Silverado, 2007 Silverado Classic & 2003-2006 Avalanche (GMT800) LED Triple Projector Headlights Assembly — 4-Piece Kit — Plug and play wiring and connector details — H-SIL03
2003-2006 Chevrolet Silverado, 2007 Silverado Classic & 2003-2006 Avalanche (GMT800) LED Triple Projector Headlights Assembly — 4-Piece Kit — Headlights illuminated at dusk — H-SIL03
2003-2006 Chevrolet Silverado, 2007 Silverado Classic & 2003-2006 Avalanche (GMT800) LED Triple Projector Headlights Assembly — 4-Piece Kit — Before and after headlight upgrade — H-SIL03

Product image checkpoints

  • This kit replaces four lamps, not two. The truck carries a headlight and a separate bumper lamp on each side, so lay all four pieces out and identify left from right before anything comes off the truck.
  • Match each supplied connector to the corresponding vehicle connector and confirm the lock tab seats fully before reinstalling trim.
  • Compare the rear of each new assembly with the original you removed, one piece at a time, rather than removing all four first.
  • Do not add universal electrical parts such as resistors or decoders unless RIGNOX support confirms they are needed.

Product notes

  • Each headlight uses three projectors: two bi-function projectors for low and high beam, and one dedicated high-beam projector.
  • The daytime running light is white. The turn signal sweeps in amber sequence, and a startup animation runs when the lights power on.
  • An amber reflector sits at the outer corner of each headlight.
  • The kit plugs into the factory connectors; no adapter harness is required.
  • Original vehicle trim, clip style, and fastener locations can vary by year, trim, and previous repairs. Remove panels slowly and verify each fastener before pulling.

Before you begin

  • Confirm the exact product: Check that all four pieces are present and undamaged, and that the lens and housing match the product page images, before removing anything from the truck.
  • Confirm your body style: 2007 trucks must be Silverado Classic models. Avalanche owners should confirm the truck does not have factory body cladding.
  • Work powered down: Park on level ground, switch the vehicle off, and disconnect the negative battery terminal when handling wiring.
  • Work one side at a time: Leaving the opposite side assembled gives you a reference for connector routing and lamp seating.
  • Protect body panels: Use clean towels or masking tape near painted edges around the hood, grille, and bumper edge.
  • Do not force clips: If a lamp or trim panel does not move, stop and look for another fastener or locating pin.
  • No grease on connectors: Do not apply dielectric grease or weather-sealing grease to connectors or sockets.

Tools and supplies

  • Trim removal tool or panel clip tool
  • Metric socket and ratchet set; verify exact sizes on the vehicle before removal
  • Phillips and flat screwdrivers
  • Clean microfiber towels and masking tape
  • Electrical tape and zip ties for tidying harness routing
  • A wall or flat vertical surface for beam-pattern checking

Remove the original lamps

  1. Open the hood and expose the lamp retainers: Locate every retainer for the headlight on the side you are working on before releasing any of them, and note how each one is oriented so it goes back the same way.

  2. Release the headlight assembly: With the retainers clear, draw the headlight straight forward off its locating pins. Do not twist it or lever it against the fender — if it will not come, a retainer is still engaged.

  3. Disconnect the headlight wiring: Support the assembly, release each locking tab, and separate the connectors. Pull on the connector body, never on the wires.

  4. Remove the bumper park / turn lamp: Repeat the same sequence for the lamp below the headlight. Keep the fasteners for each lamp separated, since headlight and bumper lamp hardware is not interchangeable.

  5. Repeat on the opposite side once the first side is fully installed and tested.

Install the RIGNOX lamps

  1. Connect the wiring: Plug the RIGNOX lamp into the factory connectors for that side. No adapter harness is required. Confirm every plug is fully seated and locked.

  2. Test before you close anything up: With the lamp still loose, switch on and confirm low beam, high beam, the white daytime running light, the amber sequential turn signal, and the startup animation. It is far easier to fix a connector now than after the assembly is bolted in.

  3. Seat and secure the headlight: Guide the assembly onto its locating pins, check the gap against the fender and hood, then refit the retainers. The lamp should sit flush without being forced.

  4. Fit the bumper park / turn lamp the same way, then refit any trim you removed.

  5. Repeat on the opposite side, then reconnect the negative battery terminal.

Electrical and function test

  1. Confirm low beam and high beam operate on both sides, including the dedicated high-beam projector.
  2. Confirm the white daytime running light, position lamps, amber sequential turn signal, and hazard flash on all four lamps.
  3. Confirm the startup animation runs at power-on.
  4. Check for dashboard warnings, flicker, or hyperflash before reinstalling final trim.
  5. Verify beam aim against a flat vertical surface so the cutoff is safe and even.

Final check

  • All connectors are locked, dry, and routed without tension.
  • All four lamps sit flush with even body gaps and properly seated seals.
  • All lighting functions pass on both sides.
  • No warning lights, flicker, hyperflash, abnormal heat, moisture issue, or loose wiring remains after a short check drive.

Troubleshooting

  • One lamp does not turn on: Recheck the main connector lock, related fuse, and battery connection.
  • The headlight works but the bumper lamp does not: These are separate assemblies on separate connectors. Confirm the bumper lamp has its own plug fully seated rather than assuming one connector feeds both.
  • Warning message, flicker, or hyperflash: Confirm both sides are wired the same way, then contact RIGNOX support before adding any universal load resistor or decoder.
  • Moisture appears: Light condensation right after installation is normal and usually clears within about a week of regular driving as the lamp warms up. If water collects inside or the moisture doesn't clear, contact RIGNOX support.
  • Beam pattern is too high or uneven: Recheck lamp seating first, then adjust aim on a flat surface.

Need help?

If a plug, part or trim piece doesn't match this guide, stop before modifying anything and get installation help. Our install team replies within one business day and will know which guide you're following.


Updated: Oct / 30 / 2026

Before you call it done

After the Install

No DRL plug in your harness? Vehicles that never had daytime running lights need the DRL lead wired to a fuse that switches with the key: how to find the right fuse with a test light, and how to tap it safely.

Aim the low beams before you drive at night; a projector an inch too high blinds oncoming traffic: the 25-foot wall method, and where the adjusters are on this housing.

Fast-blinking turn signals or a bulb-out message after the swap is a load issue, not a fault: how to tell hyperflash from flicker, and what to check first.

A thin mist inside the lens after a cold night is normal on any vented lamp: the automaker rule for fog vs a real leak.

Stuck on a step?

Our install team replies within one business day. We'll know which guide you're following. Three quick checks solve most cases; still stuck, send the photos and we'll take it from there.

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