{"product_id":"hpt-gm-e42-l5p-global-b-ecm-upgrade-vin-original-ecm-required","title":"HPT GM E42 L5P Global B ECM Upgrade (ECM UNLOCK) (*VIN \u0026 Original ECM Required*)","description":"\u003ch2\u003eUnlock Custom Tuning for Your Next-Generation Duramax\u003c\/h2\u003e\u003cp\u003eTake the next step toward a calibration built around your truck and your goals. The \u003cstrong\u003eHP Tuners GM E42 L5P Global B ECM Upgrade\u003c\/strong\u003e prepares your original engine controller for custom tuning, diagnostics, and data logging with VCM Suite.\u003c\/p\u003e\u003cp\u003eDesigned for supported E42-equipped Duramax applications, this \u003cstrong\u003eone-time, send-in service\u003c\/strong\u003e upgrades your factory ECM so a tuner can access it through compatible HP Tuners equipment. You keep your original controller and gain the tuning access needed to develop a calibration for your specific setup.\u003c\/p\u003e\u003ch3\u003eConfirmed L5P Truck Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2024–2026 Chevrolet Silverado 2500\/3500:\u003c\/strong\u003e 6.6L L5P Duramax diesel with E42 ECM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2024–2026 GMC Sierra 2500\/3500:\u003c\/strong\u003e 6.6L L5P Duramax diesel with E42 ECM.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAdditional E42 Platform Support\u003c\/h3\u003e\u003cp\u003eHP Tuners also supports select \u003cstrong\u003e2024+ GM and International medium-duty trucks with the L5D engine and E42 ECM\u003c\/strong\u003e through this service. Its application list includes 2024–2026 Chevrolet Silverado 4500\/5500\/6500 6.6L L5D Duramax trucks. Confirm the exact VIN, controller, model year, and application with HP Tuners before ordering for a medium-duty truck; shared engine displacement does not establish compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNot for 2017–2023 Silverado\/Sierra 2500\/3500 L5P trucks:\u003c\/strong\u003e those require the E41 ECM service instead. This is not an unlock service for gasoline-powered HD trucks or 1500-series diesel controllers.\u003c\/p\u003e\u003ch3\u003eWhy Upgrade Your E42?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnable custom calibration:\u003c\/strong\u003e Prepare your supported ECM for tuning with VCM Suite.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep your original controller:\u003c\/strong\u003e Upgrade the ECM already matched to your truck rather than buying a replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess useful engine data:\u003c\/strong\u003e Support scanning and data logging as part of the calibration process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetain diagnostic functionality:\u003c\/strong\u003e VCM Scanner, dealer diagnostics, and other diagnostic tools continue to function normally.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRequired Equipment and Licensing\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYour VIN and the original E42 ECM removed from your vehicle and shipped for servicing.\u003c\/li\u003e\n\u003cli\u003eAn \u003cstrong\u003eMPVI3 or MPVI4\u003c\/strong\u003e interface, sold separately.\u003c\/li\u003e\n\u003cli\u003eThe latest version of \u003cstrong\u003eVCM Suite BETA\u003c\/strong\u003e and an internet connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 Universal Credits\u003c\/strong\u003e to license the upgraded ECM, sold separately.\u003c\/li\u003e\n\u003cli\u003eA suitable custom calibration, arranged separately.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKnow What You Are Buying\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eThis is an ECM unlock service, not a replacement ECM, tuning interface, credit pack, or preloaded performance tune.\u003c\/strong\u003e The service enables tuning access; unlocking alone does not add horsepower or torque. Transmission-controller services and licensing are separate where required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOnly your vehicle’s original ECM is accepted. Spare ECMs are not accepted, without exception.\u003c\/strong\u003e ECMs with broken tabs are also not accepted for upgrades. Plan for vehicle downtime while your controller is away; shipping time is additional to service processing time.\u003c\/p\u003e\u003cp\u003eAfter upgrading, tuning is performed through the OBDII port using the required HP Tuners interface, software, and internet connection. Retain your stock calibration file if you intend to return to stock using VCM Suite.\u003c\/p\u003e","brand":"797 Offroad","offers":[{"title":"Default Title","offer_id":48956505096353,"sku":"HPTECM-E42-L5P-U","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/9905\/1937\/files\/53387a3fd4357583d4ffae78c8600365L.jpg?v=1794371148","url":"https:\/\/www.davescustomparts.com\/products\/hpt-gm-e42-l5p-global-b-ecm-upgrade-vin-original-ecm-required","provider":"Dave's Custom Parts","version":"1.0","type":"link"}