{"product_id":"high-performance-ignition-coils-for-gmc-yukon-2000-2006-4-8l-5-3l-6-0l","title":"High Performance Ignition Coils for GMC Yukon (2000-2006) 4.8L 5.3L 6.0L","description":"\u003ch2\u003eHigh-Output Ignition Coils for 2000-2006 GMC Yukon (Vortec Gen III \/ GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Replaces aging or failing factory coil packs to restore optimal spark energy, eliminate misfires under heavy load, and ensure consistent combustion across all cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Yukon Thermal Degradation Problem\u003c\/h3\u003e\n\u003cp\u003eThe factory Gen III Vortec ignition coils, particularly on high-mileage GMT800 platforms, suffer from severe thermal degradation. Positioned directly above the exhaust manifolds, the OEM plastic housings undergo thousands of extreme heat cycles. Over time, this thermal stress causes micro-cracking in the epoxy potting compound, allowing moisture intrusion and internal arcing. Symptoms manifest as intermittent P0300 random misfire codes, rough idling, degraded throttle response, and significant power loss during towing or heavy acceleration. The factory internal windings also break down as resistance builds, leading to noticeably weak spark delivery at higher RPMs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThese replacement ignition coils are engineered to exceed factory Delphi and ACDelco specifications. Featuring upgraded copper-core primary and secondary windings alongside improved magnetic steel laminations, they deliver superior primary voltage saturation and faster recovery times between firing events. The housing is constructed from a high-temperature dielectric polymer that actively resists thermal breakdown and prevents the housing fractures common to OEM units. An advanced epoxy resin potting isolates the internal circuitry against extreme engine bay temperatures and severe chassis vibration. The direct-fit, bolt-on design utilizes standard oval female connectors and 4-blade male terminals for seamless integration with the factory GMT800 wiring harness, ensuring zero-splice installation and immediate restoration of drivability.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2000-2006 GMC Yukon\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eVortec Gen III (LR4\/LM7\/LQ4) \/ GMT800\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e275-345 hp \/ 290-380 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e920-1020, SKIC121, CUF262, 82863, 48658, 178-8399, GN10119, IC413, 353N, 3-566, 8263, 82633, 8286, U5183, 410001, C-593, 10457730, 19005218, D585, 140040ACC, 3IC221, 50016, 36-1205, 5113, 2505-247733, E254, C1251, C1251-8, 12563293, 8104577300, C1251VC, 5C1082, IC413SB, UF262T, 673-7101, 52-1647, 50016, C1251SPEC, 2-50016, EBC1347, 26C1048, IGC0127\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2000-2006 GMC Yukon 4.8L V8\u003c\/li\u003e\n  \u003cli\u003e2000-2006 GMC Yukon 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2000-2006 GMC Yukon 6.0L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for the demands of the GMT800 chassis, these coils ensure reliable ignition performance whether you are daily driving, hauling heavy payloads, or towing cross-country, eliminating annoying CEL misfire codes and restoring true heavy-duty reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48234297196792,"sku":"DS-EH7YHBXLT","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/Ignition-Chevy-V8.jpg?v=1776103425","url":"https:\/\/performancechiptuning.com\/products\/high-performance-ignition-coils-for-gmc-yukon-2000-2006-4-8l-5-3l-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}