Upgrading to LED Headlights on a 2006 Sierra 1500

You have two main options, and the choice is critical. The first is installing LED replacement bulbs into your existing (or new OEM-style) halogen housings. This is cost-effective but has a significant caveat: the stock reflector is engineered for the specific point of light from a halogen filament. Most LED bulbs have a different physical layout, which can scatter light, creating a poor beam pattern with dark spots and excessive glare for oncoming traffic. If you choose this path, you must select bulbs marketed as “CAN Bus ready” for compatibility and prioritize models with a 360-degree design that better mimics a halogen’s light source.
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