{"product_id":"2021-2026-gm-e66-ecm-global-b-unlock-service","title":"2021-2026 GM E66 ECM (GLOBAL B) UNLOCK SERVICE","description":"\u003ch1\u003e2021–2026 GM E66 ECM (Global B) Unlock Service\u003c\/h1\u003e\n\u003cp\u003eUnlock your factory E66 ECM and prepare your 2021–2026 GM truck for custom tuning.\u003c\/p\u003e\n\u003cp\u003eThe E66 Engine Control Module (ECM) found in Global B-equipped GM trucks is encrypted from the factory and must be unlocked before custom calibrations can be installed. Our unlock service modifies your factory ECM, allowing it to accept custom tuning while retaining your original module.\u003c\/p\u003e\n\u003ch2\u003eProfessional ECM Unlock Service\u003c\/h2\u003e\n\u003cp\u003eThis is a mail-in unlock service for your factory E66 ECM.\u003c\/p\u003e\n\u003cp\u003eOnce your ECM is received, our technicians perform the unlock procedure and thoroughly verify proper operation before returning it to you.\u003c\/p\u003e\n\u003cp\u003eWhat this includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProfessional E66 ECM unlock\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFull testing and verification before return shipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFactory ECM retained—no core exchange required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReady for custom tuning upon return\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatible Vehicles\u003c\/h2\u003e\n\u003cp\u003eThis service is compatible with select \u003cstrong\u003e2021–2026 Chevrolet and GMC\u003c\/strong\u003e trucks equipped with the factory \u003cstrong\u003eE66 ECM (Global B platform).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you are unsure whether your vehicle uses the E66 ECM, please contact us before placing your order.\u003c\/p\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eThis service requires you to remove and ship your factory ECM to us.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe ECM must be unlocked before custom tuning can be installed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe unlock service does \u003cstrong\u003enot\u003c\/strong\u003e include tuning files, licenses, tuning devices, or tuning support. These items must be purchased separately if needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePlease package your ECM carefully to prevent shipping damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTurnaround Time\u003c\/h2\u003e\n\u003cp\u003eOur standard turnaround time is typically \u003cstrong\u003e3–4 weeks\u003c\/strong\u003e from the date your ECM is received.\u003c\/p\u003e\n\u003cp\u003eNeed your truck back sooner? We also offer an \u003cstrong\u003eExpedited Unlock Service\u003c\/strong\u003e for customers who require a faster turnaround. Contact us for current availability and pricing.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Our Unlock Service?\u003c\/h2\u003e\n\u003cp\u003eYour factory ECM is one of the most important components on your truck. Our unlock process is performed using proven procedures designed specifically for the GM Global B platform to ensure your ECM is returned ready for custom tuning.\u003c\/p\u003e\n\u003cp\u003eWhether you're preparing for engine tuning now or planning future modifications, unlocking your E66 ECM is the first step toward accessing custom calibration capabilities.\u003c\/p\u003e\n\u003ch2\u003eOrder Your E66 ECM Unlock Service\u003c\/h2\u003e\n\u003cp\u003eOnce your unlocked ECM is returned, it will be ready for compatible custom tuning solutions. If you have questions about compatibility, required hardware, or the tuning process, our team is happy to help you choose the correct setup before ordering.\u003c\/p\u003e","brand":"JAT Supply Co","offers":[{"title":"Default Title","offer_id":45853495853247,"sku":null,"price":800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0506\/8433\/0175\/files\/Screenshot2026-07-14at5.08.41PM.png?v=1784067012","url":"https:\/\/jatsupplyco.com\/products\/2021-2026-gm-e66-ecm-global-b-unlock-service","provider":"JAT Supply Co","version":"1.0","type":"link"}