{"title":"Flex Fuel Kits","description":"\u003cp\u003eFlex fuel sensor kits for GM LS and LT platforms. Each kit adds an OEM GM ethanol content sensor so the ECU can read the blend in the tank and fuel to it. Kits differ by harness and where the signal is picked up — check the fitment list to find the one your vehicle takes.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eSold for off-road \/ competition-use vehicles only.\u003c\/small\u003e\u003c\/p\u003e","products":[{"product_id":"hr-hr-ff-gen3","title":"Flex Fuel Kit — Gen 3 (P59\/0411)","description":"\u003cp\u003eAdds ethanol content sensing to a Gen 3 LS so the calibration can read the blend in the tank instead of assuming pump gas.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e OEM GM ethanol content sensor (Continental), braided stainless fuel line and adapter, install harness using OEM GM connectors, fuel line disconnect tool, and vehicle-specific pinout and wiring instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it signals:\u003c\/strong\u003e The sensor output splices to a spare frequency input on the PCM. Pinout is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Gen 3 LS — LS1, LS2 and LS6 — on P01 \/ P59 PCMs. Confirm your year and PCM with the vehicle picker before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible:\u003c\/strong\u003e it is a sensor and a signal harness. The hardware comes back out and the calibration returns to straight gasoline whenever you want.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso required:\u003c\/strong\u003e the PCM has to be calibrated to read the sensor. This kit is the hardware only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVehicles this kit covers\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Silverado 1999–2006\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 2007 (Classic — Old Body)\u003c\/li\u003e\n\u003cli\u003eChevrolet Tahoe \/ Suburban 2000–2006\u003c\/li\u003e\n\u003cli\u003eChevrolet Avalanche 2002–2006\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 1999–2006\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2007 (Classic — Old Body)\u003c\/li\u003e\n\u003cli\u003eGMC Yukon \/ Yukon XL 2000–2006\u003c\/li\u003e\n\u003cli\u003eCadillac Escalade 2002–2006\u003c\/li\u003e\n\u003cli\u003ePontiac GTO 2004\u003c\/li\u003e\n\u003cli\u003eHummer H2 2003–2007\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003csmall\u003eSold for off-road \/ competition-use vehicles only.\u003c\/small\u003e\u003c\/p\u003e","brand":"Hi-Rev","offers":[{"title":"Default Title","offer_id":49903890694387,"sku":"HR-FF-GEN3","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/7444\/0691\/files\/hirev-flex-fuel-kit_36b7fe93-46c3-4421-9a30-77de26b1cbd4.png?v=1786721688"},{"product_id":"hr-hr-ff-gen35","title":"Flex Fuel Kit — Gen 3.5 (E40)","description":"\u003cp\u003eAdds ethanol content sensing to a Gen 3.5 GM running the E40 PCM.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e OEM GM ethanol content sensor (Continental), braided stainless fuel line and adapter, install harness using OEM GM connectors, fuel line disconnect tool, and vehicle-specific pinout and wiring instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it signals:\u003c\/strong\u003e Wires to a spare signal input at the PCM. Pinout is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Gen 3.5 applications on the E40 PCM. Confirm your year and PCM with the vehicle picker before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible:\u003c\/strong\u003e it is a sensor and a signal harness. The hardware comes back out and the calibration returns to straight gasoline whenever you want.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso required:\u003c\/strong\u003e the PCM has to be calibrated to read the sensor. This kit is the hardware only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVehicles this kit covers\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Corvette 2005 (C6)\u003c\/li\u003e\n\u003cli\u003eChevrolet Trailblazer SS 2006–2007\u003c\/li\u003e\n\u003cli\u003ePontiac GTO 2005–2006\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003csmall\u003eSold for off-road \/ competition-use vehicles only.\u003c\/small\u003e\u003c\/p\u003e","brand":"Hi-Rev","offers":[{"title":"Default Title","offer_id":49903890727155,"sku":"HR-FF-GEN35","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/7444\/0691\/files\/hirev-flex-fuel-kit_597bfc61-3339-4af6-a3c0-864a7fabf217.png?v=1786721693"},{"product_id":"hr-hr-ff-std","title":"Flex Fuel Kit — Gen 4\/5 Kit (Car, SUV \u0026 Truck)","description":"\u003cp\u003eAdds ethanol content sensing to a Gen 4 or Gen 5 GM car, SUV or truck so the ECU can read the blend in the tank and fuel to it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e OEM GM ethanol content sensor (Continental), braided stainless fuel line and adapter, install harness using OEM GM connectors, fuel line disconnect tool, and vehicle-specific pinout and wiring instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it signals:\u003c\/strong\u003e Wires to a spare 5V \/ signal input at the PCM or ECM, depending on platform. Pinout is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Gen 4 (LS3, L92, L9H, LC9, LY6) on E38 \/ E67, and Gen 5 LT (LT1, LT4, L86, L83, L84) on E92 \/ E92A. Covers all Gen 4 trucks and SUVs, and 2019–2022 Gen 5 trucks. 2014–2018 Gen 5 trucks take the Gen 5 Truck kit instead, and the 2016-and-newer Camaro SS takes the 6th Gen Camaro kit. Confirm your year and PCM with the vehicle picker before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible:\u003c\/strong\u003e it is a sensor and a signal harness. The hardware comes back out and the calibration returns to straight gasoline whenever you want.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso required:\u003c\/strong\u003e the PCM has to be calibrated to read the sensor. This kit is the hardware only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVehicles this kit covers\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Corvette 2006–2013 (C6)\u003c\/li\u003e\n\u003cli\u003eChevrolet Corvette 2009–2013 (C6 ZR1)\u003c\/li\u003e\n\u003cli\u003eChevrolet Corvette 2014–2019 (C7 Stingray)\u003c\/li\u003e\n\u003cli\u003eChevrolet Corvette 2015–2019 (C7 Z06)\u003c\/li\u003e\n\u003cli\u003eChevrolet Camaro 2010–2015 SS \/ 1LE \/ Z28\u003c\/li\u003e\n\u003cli\u003eChevrolet Camaro 2012–2015 ZL1\u003c\/li\u003e\n\u003cli\u003eChevrolet Camaro 2017 \u0026amp; Newer ZL1\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 2007–2013\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 2019–2022\u003c\/li\u003e\n\u003cli\u003eChevrolet Tahoe \/ Suburban 2007–2014\u003c\/li\u003e\n\u003cli\u003eChevrolet Tahoe \/ Suburban 2015–2020\u003c\/li\u003e\n\u003cli\u003eChevrolet Avalanche 2007–2013\u003c\/li\u003e\n\u003cli\u003eChevrolet Trailblazer SS 2008\u003c\/li\u003e\n\u003cli\u003eChevrolet SS Sedan 2014–2017\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2007–2013\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2019–2022\u003c\/li\u003e\n\u003cli\u003eGMC Yukon \/ Yukon XL 2007–2014\u003c\/li\u003e\n\u003cli\u003eGMC Yukon \/ Yukon XL 2015–2020\u003c\/li\u003e\n\u003cli\u003eCadillac CTS-V 2009–2015\u003c\/li\u003e\n\u003cli\u003eCadillac CTS-V 2016–2019\u003c\/li\u003e\n\u003cli\u003eCadillac Escalade 2007–2014\u003c\/li\u003e\n\u003cli\u003eCadillac Escalade 2015–2020\u003c\/li\u003e\n\u003cli\u003ePontiac G8 2008–2009 GT \/ GXP\u003c\/li\u003e\n\u003cli\u003eHummer H2 2008–2009\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003csmall\u003eSold for off-road \/ competition-use vehicles only.\u003c\/small\u003e\u003c\/p\u003e","brand":"Hi-Rev","offers":[{"title":"Default Title","offer_id":49903890759923,"sku":"HR-FF-STD","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/7444\/0691\/files\/hirev-flex-fuel-kit_50c778f7-be29-4b09-bb1d-8c2bf6522bbf.png?v=1786721699"},{"product_id":"hr-hr-ff-truck","title":"Flex Fuel Kit — Gen 5 Truck (Simplified)","description":"\u003cp\u003eThe simplified harness for 2014–2018 Gen 5 LT trucks, which wire differently from the rest of the Gen 5 range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e OEM GM ethanol content sensor (Continental), braided stainless fuel line and adapter, install harness using OEM GM connectors, fuel line disconnect tool, and vehicle-specific pinout and wiring instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it signals:\u003c\/strong\u003e Wires to a spare signal input at the ECM. Pinout is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 2014–2018 Gen 5 LT trucks (L83 \/ L86) on E92 \/ E92A. Other years take the standard kit. Confirm your year and PCM with the vehicle picker before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible:\u003c\/strong\u003e it is a sensor and a signal harness. The hardware comes back out and the calibration returns to straight gasoline whenever you want.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso required:\u003c\/strong\u003e the ECM has to be calibrated to read the sensor. This kit is the hardware only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVehicles this kit covers\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Silverado 2014–2018\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2014–2018\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003csmall\u003eSold for off-road \/ competition-use vehicles only.\u003c\/small\u003e\u003c\/p\u003e","brand":"Hi-Rev","offers":[{"title":"Default Title","offer_id":49903890792691,"sku":"HR-FF-TRUCK","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/7444\/0691\/files\/hirev-flex-fuel-kit_622ebeaf-7516-4bc6-a275-9e181a207b6b.png?v=1786721705"},{"product_id":"hr-hr-ff-txx","title":"Flex Fuel Kit — Holley Terminator X","description":"\u003cp\u003eFor engines running a Holley Terminator X. The sensor feeds Holley’s own flex fuel input, so the blend is handled in the Terminator X software rather than a GM PCM.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e OEM GM ethanol content sensor (Continental), braided stainless fuel line and adapter, install harness using OEM GM connectors, fuel line disconnect tool, and vehicle-specific pinout and wiring instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it signals:\u003c\/strong\u003e Wired to the Terminator X flex fuel input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Any LS or LT running a Holley Terminator X. Confirm your year and PCM with the vehicle picker before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible:\u003c\/strong\u003e it is a sensor and a signal harness. The hardware comes back out and the calibration returns to straight gasoline whenever you want.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso required:\u003c\/strong\u003e flex fuel has to be set up in the Terminator X software. This kit is the hardware only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003csmall\u003eSold for off-road \/ competition-use vehicles only.\u003c\/small\u003e\u003c\/p\u003e","brand":"Hi-Rev","offers":[{"title":"Default Title","offer_id":49903890858227,"sku":"HR-FF-TXX","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/7444\/0691\/files\/hirev-flex-fuel-kit_8eabc3fa-9e31-4278-b030-60349143e89b.png?v=1786721717"},{"product_id":"hr-hr-ff-univ","title":"Flex Fuel Kit — Universal \/ Any ECU","description":"\u003cp\u003eThe standalone version, for any ECU with a flex fuel or frequency input — aftermarket, swapped, or anything outside the GM platform list.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e OEM GM ethanol content sensor (Continental), braided stainless fuel line and adapter, install harness, fuel line disconnect tool, and wiring instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it signals:\u003c\/strong\u003e Sends a frequency signal to your ECU’s flex fuel input. This kit is not plug-in on a standalone ECU — wiring follows your ECU’s documentation, since pinouts vary by system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Any standalone or aftermarket ECU that accepts an ethanol content signal. Confirm your year and PCM with the vehicle picker before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible:\u003c\/strong\u003e it is a sensor and a signal harness. The hardware comes back out and the calibration returns to straight gasoline whenever you want.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso required:\u003c\/strong\u003e flex fuel has to be configured in your ECU. This kit is the hardware only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003csmall\u003eSold for off-road \/ competition-use vehicles only.\u003c\/small\u003e\u003c\/p\u003e","brand":"Hi-Rev","offers":[{"title":"Default Title","offer_id":49903890890995,"sku":"HR-FF-UNIV","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/7444\/0691\/files\/hirev-flex-fuel-kit_63014244-ab29-4a87-9916-eaa05d51ae7c.png?v=1786721720"}],"url":"https:\/\/hirevdyno.com\/collections\/flex-fuel-kits.oembed","provider":"Hi-Rev Dyno \u0026 Engine ","version":"1.0","type":"link"}