{"product_id":"ignition-coil-spark-plugs-for-gmc-savana-1996-2002-2005-2007-4-3l-5-0l-5-7l-7-4l","title":"Ignition Coil + Spark Plugs for GMC Savana (1996-2002, 2005-2007) 4.3L 5.0L 5.7L 7.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Ignition Coil and Spark Plug Tune-Up Kit for GMC Savana (GMT600 \/ GMT610)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and spark plug kit restores secondary ignition voltage and consistent flame-front kernel development on the GMC Savana to eliminate cylinder misfires and resolve hard-start conditions under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Savana Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe factory distributor-based ignition systems on \u003cstrong\u003eGMT600\u003c\/strong\u003e platforms—specifically pairing the external E-core coil to \u003cstrong\u003eVortec L35\u003c\/strong\u003e, \u003cstrong\u003eL30\u003c\/strong\u003e, \u003cstrong\u003eL31\u003c\/strong\u003e, and \u003cstrong\u003eL29\u003c\/strong\u003e engines—suffer from chronic thermal cycling breakdown. Over decades of commercial duty cycles, the OEM epoxy potting within the secondary winding degrades, yielding dielectric breakdown, internal arcing, and carbon tracking. Concurrently, factory copper-core plugs suffer from rapid electrode erosion and widened spark gaps. This combination forces the coil to run at elevated duty cycles to jump excessive resistances, ultimately triggering random misfires (P0300), sluggish heavy-load tip-in, unburnt fuel wash, and catalytic converter fouling.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement kit resolves primary and secondary ignition bottlenecks through high-grade copper windings and optimized wire ratios that yield reliable peak kilovolt output under heavy chamber pressures. Matched with precise-gap, nickel-alloy spark plugs, the assembly resists high-heat combustion chamber erosion and minimizes secondary electrical resistance. By restoring precise ignition timing transfer and preventing coil heat soak saturation, this direct-fit \u003cstrong\u003eD577\u003c\/strong\u003e style kit guarantees clean combustion, optimal idle vacuum, and peak torque transfer across severe towing demands.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eGMC Savana 1500, 2500, 3500\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4.3L V6, 5.0L V8, 5.7L V8, 7.4L V8 \/ GMT600, GMT610\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e200-290 hp \/ 250-410 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e10489421, 19207138, 19418996, D577, DR49\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1999-2002, 2006-2007 GMC Savana 1500 4.3L\u003c\/li\u003e\n  \u003cli\u003e1999-2002, 2005 GMC Savana 2500 4.3L\u003c\/li\u003e\n  \u003cli\u003e1997-2002 GMC Savana 5.0L\u003c\/li\u003e\n  \u003cli\u003e1996-2002 GMC Savana 5.7L\u003c\/li\u003e\n  \u003cli\u003e1999-2000 GMC Savana 3500 7.4L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT600 Savana?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the GMC Savana equipped with the Vortec 4.3L, 5.0L, 5.7L, or 7.4L engine.\u003c\/p\u003e\n\n\u003ch4\u003eWhy are 8 spark plugs included if I drive a 4.3L V6?\u003c\/h4\u003e\n\u003cp\u003eThe package contains 8 spark plugs to support both V8 and V6 platforms; 4.3L V6 applications utilize 6 plugs, leaving 2 spares.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Workhorse Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-mileage fleet and heavy-hauling reliability, these components withstand prolonged thermal loads under severe towing duty without misfire-induced limp modes.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67518820450552,"sku":"DS-ERIGQLZK1","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-gmc-savana-1996-2002-2005-2007-4-3l-5-0l-5-7l-7-4l-1.jpg?v=1790370586","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-spark-plugs-for-gmc-savana-1996-2002-2005-2007-4-3l-5-0l-5-7l-7-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}