{"product_id":"hp-tuners-gm-e42-ecm-service-l5p-global-b","title":"HP Tuners GM E42 ECM Service (L5P, Global B)","description":"\u003cp\u003eHP Tuners’ one-time send-in upgrade service for the GM Global B E42 ECM used in the latest-generation 6.6L Duramax platform. The original E42 ECM must be upgraded before custom tuning with VCM Suite.\u003c\/p\u003e\u003ch2\u003eSupported Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e2024–2026 Chevrolet Silverado 2500\/3500 6.6L L5P Duramax\u003c\/li\u003e\n\u003cli\u003e2024–2026 GMC Sierra 2500\/3500 6.6L L5P Duramax\u003c\/li\u003e\n\u003cli\u003e2024–2026 Chevrolet Silverado 4500\/5500\/6500 6.6L L5D Duramax\u003c\/li\u003e\n\u003cli\u003e2024–2026 GMC Sierra 4500\/5500\/6500 6.6L L5D Duramax\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e2017–2023 Silverado\/Sierra 2500\/3500 L5P trucks use the earlier E41 ECM service instead.\u003c\/p\u003e\u003ch2\u003eRequirements\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eYour vehicle’s original E42 ECM. Spare ECMs are not accepted.\u003c\/li\u003e\n\u003cli\u003eLatest VCM Suite BETA and an internet connection.\u003c\/li\u003e\n\u003cli\u003e8 \u003ca href=\"https:\/\/powerlabstuning.com\/products\/hp-tuners-universal-credits\" title=\"HP Tuners Universal Credits\"\u003eHP Tuners Universal Credits\u003c\/a\u003e, sold separately.\u003c\/li\u003e\n\u003cli\u003eAn HP Tuners MPVI3 or \u003ca href=\"https:\/\/powerlabstuning.com\/products\/hp-tuners-mpvi4\" title=\"HP Tuners MPVI4 Interface\"\u003eHP Tuners MPVI4\u003c\/a\u003e interface.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eService Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis is an upgrade-only service for the original E42 ECM.\u003c\/li\u003e\n\u003cli\u003eECMs with broken locking tabs or connectors are not accepted.\u003c\/li\u003e\n\u003cli\u003eDo not temporarily install and relearn a spare ECM while the original is being serviced.\u003c\/li\u003e\n\u003cli\u003eDealer diagnostics and VCM Scanner continue to function normally.\u003c\/li\u003e\n\u003cli\u003eProcessing time does not include shipping and varies with HP Tuners’ current controller-service workload.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eShipping\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eHP Tuners, LLC\u003cbr\u003eATT: GM E42 ECM Service (L5P, Global B)\u003cbr\u003e[YOUR ORDER NUMBER]\u003cbr\u003e711 Dartmouth Lane\u003cbr\u003eBuffalo Grove, IL 60089\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eComplete the \u003ca href=\"https:\/\/files.hptuners.com\/pub\/2026\/05\/US-Generic-Shipping-Form-2026-V2.pdf\" title=\"HP Tuners Controller Upgrade Service Shipping Form\"\u003eHP Tuners Controller Upgrade Service Shipping Form\u003c\/a\u003e and include it in the package. Customers are responsible for inbound shipping. The shipping charge associated with this service covers return shipment after modification.\u003c\/p\u003e","brand":"HP Tuners","offers":[{"title":"Default","offer_id":62856277655711,"sku":"ECM-E42-L5P-U","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1861\/0255\/files\/hp-tuners-gm-e42-ecm-global-b.jpg?v=1787977621","url":"https:\/\/powerlabstuning.com\/products\/hp-tuners-gm-e42-ecm-service-l5p-global-b","provider":"PowerLabs Dyno \u0026 Tuning","version":"1.0","type":"link"}