{"product_id":"20881337-genuine-gm-alternator-for-silverado-sierra-express-v8","title":"20881337 Genuine GM Alternator For Silverado Sierra Express V8","description":"\u003ch2 data-start=\"479\" data-end=\"779\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-start=\"101\" data-end=\"439\"\u003eThe 20881337 alternator is a genuine GM generator assembly designed to supply consistent electrical output for charging and vehicle systems. It maintains proper battery charge and supports stable operation of onboard electronics under varying loads. \u003c\/p\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 340px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 6.15942%; text-align: center;\"\u003e\u003cstrong\u003eYear\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 44.9275%; text-align: center;\"\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 24.6377%; text-align: center;\"\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 23.1884%; 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: 6.15942%;\"\u003e2020\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet LCF 3500 \/ 4500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e6.0L V8 Gas, Flex, CNG\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase Straight Truck - Low Cab \/ Tilt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2019\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet LCF 3500 \/ 4500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e6.0L V8 Gas, Flex, CNG\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase Straight Truck - Low Cab \/ Tilt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet LCF 3500 \/ 4500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e6.0L V8 Gas, Flex\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase Straight Truck - Low Cab \/ Tilt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2017\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet LCF 3500 \/ 4500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e6.0L V8 Gas, Flex, CNG\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase Straight Truck - Low Cab \/ Tilt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2016\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet LCF 3500 \/ 4500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e6.0L V8 Gas, Flex, CNG\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase Straight Truck - Low Cab \/ Tilt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2014\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eCadillac Escalade \/ ESV\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e6.2L V8 Gas, Flex\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase, Luxury, Premium, Platinum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2013\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eCadillac Escalade \/ ESV \/ EXT\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e6.2L V8 Gas, Flex, Hybrid\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase, Luxury, Premium, Platinum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2013\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet Avalanche\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e5.3L V8 Flex\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eBase, LS, LT, LTZ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2012\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet Silverado 1500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e4.3L V6, 4.8L V8, 5.3L V8, 6.2L V8 Hybrid\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eLS, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2011\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet Silverado 1500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003e4.3L V6, 4.8L V8, 5.3L V8, 6.2L V8 Hybrid\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eLS, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2010\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet Avalanche \/ Colorado \/ Express \/ Suburban \/ Silverado 1500\/2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003eMultiple V6 \u0026amp; V8 engines\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eMultiple trims\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2009\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet Avalanche \/ Colorado \/ Express \/ Silverado 1500\/2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003eMultiple V6 \u0026amp; V8 engines\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eMultiple trims\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2008\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet Avalanche \/ Silverado 1500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003eMultiple V6 \u0026amp; V8 engines\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eLS, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2007\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eChevrolet Silverado 1500 \/ 2500 HD \/ Classic\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003eMultiple V6 \u0026amp; V8 engines\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eLS, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.15942%;\"\u003e2007\u003c\/td\u003e\n\u003ctd style=\"width: 44.9275%;\"\u003eGMC Sierra 2500 HD \/ Classic, Yukon XL 1500 \/ 2500\u003c\/td\u003e\n\u003ctd style=\"width: 24.6377%;\"\u003eMultiple V8 engines\u003c\/td\u003e\n\u003ctd style=\"width: 23.1884%;\"\u003eSLE, 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 style=\"height: 137.2px; width: 100% !important; table-layout: fixed !important; display: table !important;\" class=\"product-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 29.717%;\"\u003e \u003ccol style=\"width: 69.9686%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20881337\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlternator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2007–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.7 x 10.6 x 10.6 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16.70 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"1555\" data-end=\"1574\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"1555\" data-end=\"1574\"\u003eProduct Features\u003c\/h2\u003e\n\u003cp data-end=\"2678\" data-start=\"2584\"\u003eThe 20881337 alternator is built to match factory performance and installation requirements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"2747\" data-start=\"2682\"\u003eProvides stable electrical output for charging system operation\u003c\/li\u003e\n\u003cli data-end=\"2814\" data-start=\"2750\"\u003eMaintains proper battery voltage under varying load conditions\u003c\/li\u003e\n\u003cli data-end=\"2872\" data-start=\"2817\"\u003eDesigned for compatibility with GM electrical systems\u003c\/li\u003e\n\u003cli data-end=\"2935\" data-start=\"2875\"\u003eMatches factory mounting points and electrical connections\u003c\/li\u003e\n\u003cli data-end=\"3006\" data-start=\"2938\"\u003eSupports reliable operation of onboard electronics and accessories\u003c\/li\u003e\n\u003cli data-end=\"3064\" data-start=\"3009\"\u003eBuilt to GM specifications for consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1893\" data-end=\"1913\"\u003eApplication Notes\u003c\/h2\u003e\n\u003cp data-end=\"3201\" data-start=\"3095\"\u003eThe 20881337 alternator is intended for vehicles equipped with the factory charging system listed above.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp data-end=\"3325\" data-start=\"3203\"\u003eAlways verify part number, engine configuration, and electrical system requirements before installation.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"GM","offers":[{"title":"Default Title","offer_id":48498644910307,"sku":"20881337","price":348.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/5122\/4547\/files\/s-l1600_33eea79a-4be1-4b82-a6a2-e6942958be12.webp?v=1773920952","url":"https:\/\/unitautoparts.com\/products\/20881337-genuine-gm-alternator-for-silverado-sierra-express-v8","provider":"Unit Auto Parts","version":"1.0","type":"link"}