{"product_id":"84303179-genuine-gm-engine-wiring-harness-junction-block-for-silverado-sierra-4-3l-5-3l-6-2l","title":"84303179 Genuine GM Engine Wiring Harness Junction Block For Silverado Sierra 4.3L 5.3L 6.2L","description":"\u003ch2 data-end=\"779\" data-start=\"479\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-start=\"111\" data-end=\"601\"\u003eThe 84303179 is a genuine GM engine wiring harness junction block designed to link the engine harness with fuse circuits and vehicle control systems. It functions as a central electrical distribution unit that organizes multiple power and signal connections required for engine system operation.\u003c\/p\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 438px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 6.11511%; text-align: center;\"\u003e\u003cstrong\u003eYear\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 21.223%; text-align: center;\"\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 44.2446%; text-align: center;\"\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 27.6978%; text-align: center;\"\u003e\u003cstrong\u003eTrims\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2019\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 1500 LD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e5.3L V8 Flex, 5.3L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eCustom, LT, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2019\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2019\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2019\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 1500 Limited\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e5.3L V8 Flex, 5.3L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, SLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2019\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2019\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 1500\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e4.3L V6 Flex, 5.3L V8 Electric\/Gas, 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eCustom, High Country, LS, LT, LTZ, SSV, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 1500\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e4.3L V6 Flex, 5.3L V8 Electric\/Gas, 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2017\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 1500\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e4.3L V6 Flex, 5.3L V8 Electric\/Gas, 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eCustom, High Country, LS, LT, LTZ, SSV, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2017\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2017\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eChevrolet Silverado 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2017\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 1500\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e4.3L V6 Flex, 5.3L V8 Electric\/Gas, 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2017\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.11511%;\"\u003e2017\u003c\/td\u003e\n\u003ctd style=\"width: 21.223%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 44.2446%;\"\u003e6.0L V8 Flex, 6.0L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.6978%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eGeneral Specifications\u003c\/h2\u003e\n\u003cdiv style=\"width: 100%; display: block;\"\u003e\n\u003ctable class=\"product-table\" style=\"height: 196px; width: 100% !important; table-layout: fixed !important; display: table !important;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 29.6343%;\"\u003e \u003ccol style=\"width: 69.9874%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e84303179\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eGM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eEngine Wiring Harness Junction Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e2017–2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eChevrolet Silverado \/ GMC Sierra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e4.3L V6, 5.3L V8, 6.0L V8, 6.2L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e15.4 x 9.6 x 5.3 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e3.70 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eFitment Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eDirect Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-end=\"1574\" data-start=\"1555\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 data-end=\"1574\" data-start=\"1555\"\u003eProduct Features\u003c\/h2\u003e\n\u003cp\u003eThe 84303179 engine wiring harness junction block is built to match factory electrical system performance and installation requirements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine GM engine wiring harness junction block\u003c\/li\u003e\n\u003cli\u003eCentral interface for engine harness electrical connections\u003c\/li\u003e\n\u003cli\u003eDistributes electrical power between engine components, relays, and fuse circuits\u003c\/li\u003e\n\u003cli\u003eDesigned to follow the original GM harness routing and mounting configuration\u003c\/li\u003e\n\u003cli\u003eSupports correct routing of engine control and signal circuits\u003c\/li\u003e\n\u003cli\u003eFactory-style connectors ensure proper electrical engagement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"1913\" data-start=\"1893\"\u003eApplication Notes\u003c\/h2\u003e\n\u003cp data-end=\"3938\" data-start=\"3656\"\u003eThe 84303179 is designed for GM truck platforms that use this type of junction block to manage electrical distribution between engine harness circuits and fuse systems. It installs in the factory mounting location and connects directly to the original wiring harness connectors.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp data-end=\"4041\" data-start=\"3940\"\u003eAlways verify part number, engine configuration, and system type before installation.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"GM","offers":[{"title":"Default Title","offer_id":48431895183587,"sku":"84303179","price":348.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/5122\/4547\/files\/s-l1600_49bfd090-eda2-425c-b603-ae0f094dd6e3.webp?v=1772809642","url":"https:\/\/unitautoparts.com\/products\/84303179-genuine-gm-engine-wiring-harness-junction-block-for-silverado-sierra-4-3l-5-3l-6-2l","provider":"Unit Auto Parts","version":"1.0","type":"link"}