{"product_id":"2017-2023-6-6l-gm-chevy-duramax-l5p-tuner-harness-plug-kit","title":"2017-2023 6.6L GM Chevy Duramax L5P Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2017–2023 6.6L Chevy Silverado \u0026amp; GMC Sierra Duramax L5P engines;\u003c\/li\u003e\n\u003cli\u003eNote: The base kit does not include DEF tank plugs, Does not include shift on the fly plugs (Available Separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eDefend your truck’s next-generation electronics from the elements. When configuring your 17–23 Duramax L5P with custom tuning, several factory emission and exhaust sensors are disconnected, leaving fragile open terminals vulnerable to catastrophic corrosion.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe L5P Tuner Harness Plug Kit delivers a complete set of precision-molded weatherproof caps. Specially designed for the L5P's complex harness geometry, these plugs seal out water, mud, salt, and grime to keep your factory wiring safe and dry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eMaterial Composition: High-temp automotive grade ABS \u0026amp; premium silicone internal seals.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWaterproof \u0026amp; Anti-Corrosion: Armed with heavy-duty internal silicone gaskets that block out high-pressure car washes, road de-icing salts, and deep mud pits.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eL5P-Specific Precision Molding: Unlike generic kits, every plug is engineered to mirror the exact terminal patterns of the  factory harness for an airtight fit.\u003c\/li\u003e\n\u003cli\u003eOEM-Style Snap Locking: Built-in locking tabs securely click directly into the factory wire harness clips, ensuring they won’t shake or vibrate loose on rough terrain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit fit the newer 2024+ refreshed Duramax L5P?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, this kit is strictly for 2017–2023 model years. GM updated the ECM architecture and wiring harness configurations for the 2024+ refreshed trucks. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these plugs contain resistors to turn off dashboard trouble codes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, these are passive protective caps. They contain no electronics or resistors. To prevent Check Engine Lights or limp modes, your truck must be running a custom multi-map or delete tune flashed into the ECM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does the L5P kit look different from the older LMM or LML kits?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: \u003cmeta charset=\"utf-8\"\u003eGM completely redesigned the Duramax wiring harness for 2017+, adopting new sensor layouts and plug geometries. This kit features exclusive, precision-molded connector shapes that match the updated L5P terminals, which older kits cannot fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I accidentally force a plug into the wrong factory connector?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: \u003cmeta charset=\"utf-8\"\u003eNo, thanks to the built-in OEM-style \"keyway\" design. Each plug features unique alignment slots that act as a mechanical lock, meaning they will only slide into and click with their exact factory counterpart, making a mistaken installation virtually impossible.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261113417916,"sku":"ER-0330","price":279.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_8516f31c-f962-4333-bf74-682fc4bcc1ea.png?v=1786464545","url":"https:\/\/trueamericandiesel.com\/products\/2017-2023-6-6l-gm-chevy-duramax-l5p-tuner-harness-plug-kit","provider":"TrueAmericanDiesel","version":"1.0","type":"link"}