{"product_id":"gbtad-ignition-coil-pack-set-for-chevy-gmc-1999-2007-8-square-coils-with-iridium-wire-harness-oem-fit","title":"GBTAD Ignition Coil Pack Set for Chevy GMC 1999–2007 — 8 Square Coils with Iridium Wire Harness, OEM Fit","description":"\u003cp\u003e\u003cstrong\u003eGBTAD’s Set of 8 square ignition coil packs with an iridium spark plug wire harness is a complete ignition upgrade designed to restore reliable spark delivery and reduce misfires on compatible 4.8L–6.0L V8 GM engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Chevy Silverado, Tahoe, Suburban, Avalanche or GMC Sierra\/Yukon\/Escalade from model years 1999–2007 is showing rough idle, intermittent misfires, or a check engine light linked to ignition faults, this kit gives you all eight coils and a matching high-quality wire harness to replace worn components in one service. The components are engineered to meet OEM fit while using higher-grade materials for improved conductivity and longer service life.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines will this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis GBTAD kit is built for a range of GM trucks and SUVs with small‑block V8 engines. It covers many 4.8L, 5.3L and 6.0L applications across model years roughly 1999 through 2007—double-check engine codes before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChevrolet: Silverado (1999–2007), Avalanche (2002–2006), Suburban (2000–2006), Tahoe (2000–2006), Express (2003–2006).\u003c\/li\u003e\n  \u003cli\u003eGMC: Sierra 1500 (1999–2007), Yukon (2000–2006), Savana (2003–2005).\u003c\/li\u003e\n  \u003cli\u003eCompatible engine displacements: 4.8L, 5.3L and 6.0L V8.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance or durability benefits does this set provide?\u003c\/h3\u003e\n\u003cp\u003eThe coils and wires are manufactured with improved materials to deliver steadier spark and reduced electrical losses compared with aging stock parts. That translates to fewer misfires, more consistent combustion and system reliability under typical driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-density epoxy and aerospace-grade copper in coils for improved conductivity.\u003c\/li\u003e\n  \u003cli\u003eIridium-grade spark plug wire connections for stable high-voltage transfer.\u003c\/li\u003e\n  \u003cli\u003eEngineered to match OEM fitment for a straightforward replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what parts are included?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a direct-replacement procedure for technicians or experienced DIYers familiar with GM V8 ignition layouts. The package supplies eight square-style ignition coil packs plus one matched spark plug wire harness—everything you need to replace the ignition assembly on one bank or the full engine, depending on your problem.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes 8 coil packs (compatible with part numbers UF271, D581, 12558693, 12570553, 19299585, 41962, APP5243).\u003c\/li\u003e\n  \u003cli\u003eOne iridium spark plug wire harness sized to fit specified V8 routing.\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play connectors and standard mounting points for OEM-style installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this solve check engine lights and misfires?\u003c\/h3\u003e\n\u003cp\u003eReplacing failed or degraded coils and wires often clears ignition‑related diagnostic trouble codes and reduces misfire counts, but root-cause diagnostics are advised. If ignition components are the source, this kit commonly restores normal operation; if another issue exists (fuel, compression, sensors), additional repairs may be required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAddresses ignition-origin misfires, weak spark and related drivability symptoms.\u003c\/li\u003e\n  \u003cli\u003eHelps eliminate intermittent faults caused by cracked coils or corroded wire terminals.\u003c\/li\u003e\n  \u003cli\u003eAlways scan codes and test coils\/wires prior to replacing to confirm failure mode.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This complete set is aimed at owners and mechanics servicing late‑1990s to mid‑2000s GM full‑size trucks and SUVs who want a reliable, OEM‑fit replacement with upgraded materials. It suits fleet technicians, performance-minded DIYers, and anyone replacing multiple ignition components at once to restore engine smoothness and dependability.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these coils fit my 2004 Chevy Silverado 5.3L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this GBTAD kit is compatible with 2000–2006 Silverado 5.3L V8 engines; verify your vehicle’s engine code and connector style before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will replacing the coils and wires clear a misfire code?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If the misfire is caused by faulty coils or wiring, replacing them typically resolves the code; perform a diagnostic scan to confirm the root cause first.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GBTAD","offers":[{"title":"Default Title","offer_id":55170610725207,"sku":"B0DYXBJ9Z7","price":197.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/gbtad-front-packaging-view.jpg?v=1790431721","url":"https:\/\/britishgarage.co.uk\/products\/gbtad-ignition-coil-pack-set-for-chevy-gmc-1999-2007-8-square-coils-with-iridium-wire-harness-oem-fit","provider":"British Garage","version":"1.0","type":"link"}