{"product_id":"gm-e46-ecm-service-3-0l-duramax-lm2-upgrade-only","title":"GM E46 ECM Service (3.0L Duramax LM2) - Upgrade Only","description":"\u003cp\u003e\u003cstrong\u003eOpen up the 3.0L Duramax for custom tuning.\u003c\/strong\u003e The E46 engine computer in 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks with the 3.0L Duramax (LM2) can't be tuned as delivered from the factory. This one-time HP Tuners send-in service upgrades your truck's original ECM so it can be read, edited and flashed through the OBDII port with VCM Editor.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #d52837;\"\u003e\u003cstrong\u003eThis is a send-in service.\u003c\/strong\u003e Your ECM has to come out of the truck and ship to HP Tuners, so the truck will be down while it's away. Please read this whole page before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eWill it work on my truck?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCovered:\u003c\/strong\u003e 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 with the 3.0L Duramax (LM2) and the E46 ECM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-refresh (non-Global B) trucks only.\u003c\/strong\u003e Refreshed \"facelift\" trucks use a different Global B controller and are not covered here. See the \u003ca href=\"\/products\/gm-e66-ecm-service-global-b-upgrade-only\"\u003eGM E66 ECM Service (Global B)\u003c\/a\u003e instead.\u003c\/li\u003e\n\u003cli\u003eThe Chevrolet Suburban LM2 is not supported by this service at this time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat the upgrade does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrades your original E46 ECM for full calibration access in VCM Editor, with reads and writes done through the OBDII port afterward.\u003c\/li\u003e\n\u003cli\u003eNo immobilizer relearn, no crank relearn and no \"Replace ECM\" procedure, as long as the ECM goes back into the same truck it came out of.\u003c\/li\u003e\n\u003cli\u003eVCM Scanner, dealer diagnostics and other scan tools keep working normally.\u003c\/li\u003e\n\u003cli\u003eYou can return to the stock calibration, or update to the latest stock calibration, any time with VCM Suite.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat else you'll need (sold separately)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 Universal Credits\u003c\/strong\u003e to license the E46 ECM once it's back in the truck. \u003ca href=\"\/products\/hp-tuners-universal-tuning-credit-for-mpvi2-mpvi3\"\u003eGet credits here\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAn HP Tuners \u003cstrong\u003eMPVI2, MPVI2+, MPVI3 or \u003ca href=\"\/products\/hp-tuners-mpvi4-tuner-1\"\u003eMPVI4\u003c\/a\u003e\u003c\/strong\u003e interface.\u003c\/li\u003e\n\u003cli\u003eThe latest \u003cstrong\u003eVCM Suite BETA\u003c\/strong\u003e software (free download from HP Tuners).\u003c\/li\u003e\n\u003cli\u003eWant transmission tuning too? These trucks use the T93 TCM. HP Tuners now upgrades it through the OBDII port at no charge, so there's nothing to send in. It just takes 4 more Universal Credits to license.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConfirm your truck is covered (above) and place your order.\u003c\/li\u003e\n\u003cli\u003eAfter checkout you'll receive the HP Tuners shipping form and the order number to reference on your package.\u003c\/li\u003e\n\u003cli\u003eRemove the ECM from your truck and pack it carefully, with the completed shipping form inside the box.\u003c\/li\u003e\n\u003cli\u003eWrite your order number on the outside of the box where it's easy to see.\u003c\/li\u003e\n\u003cli\u003eShip the ECM to HP Tuners using any carrier you like. Shipping to HP Tuners is the customer's responsibility.\u003c\/li\u003e\n\u003cli\u003eHP Tuners upgrades the ECM and ships it back to you.\u003c\/li\u003e\n\u003cli\u003eReinstall the ECM, license it with 6 Universal Credits and start tuning.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eShip to:\u003c\/strong\u003e\u003cbr\u003eHP Tuners, LLC\u003cbr\u003eATT: E46 ECM Service\u003cbr\u003e[Your order number]\u003cbr\u003e711 Dartmouth Lane\u003cbr\u003eBuffalo Grove, IL 60089\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #d52837;\"\u003e\u003cstrong\u003eWait for our email before you ship.\u003c\/strong\u003e\u003c\/span\u003e After your purchase, our team emails you the order number and the HP Tuners shipping form. Please don't send your ECM until you have both.\u003c\/p\u003e\n\u003cp\u003eProcessing time at HP Tuners does not include shipping time in either direction.\u003c\/p\u003e\n\u003ch3\u003eBefore you ship: important\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYour ECM must be fully functional, with no physical or internal damage. ECMs with broken tabs or connectors will not be accepted.\u003c\/li\u003e\n\u003cli\u003eThis service upgrades your truck's original ECM for tuning. It does not reprogram an ECM for a different VIN. A spare E46 sent in for upgrade comes back with the same programming it arrived with and may need dealer programming before it will run your truck.\u003c\/li\u003e\n\u003cli\u003eOnce upgraded, the E46 can't be used with other aftermarket tuning or calibration tools. Dealer reflash tools are not affected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eQuestions on fitment before you pull your ECM? Text or email us first. We're happy to check your truck.\u003c\/p\u003e","brand":"HP Tuners","offers":[{"title":"Default Title","offer_id":54890175168830,"sku":"ECM-00-E46-U","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/9301\/0238\/files\/E46-product-tile-sq-e1678138085794.jpg?v=1794245269","url":"https:\/\/tunerstore.com\/products\/gm-e46-ecm-service-3-0l-duramax-lm2-upgrade-only","provider":"The Tuner Store","version":"1.0","type":"link"}