High Performance Ignition Coils for GMC Yukon (2000-2006) 4.8L 5.3L 6.0L

High-Output Ignition Coils for 2000-2006 GMC Yukon (Vortec Gen III / GMT800)

What it does: Replaces aging or failing factory coil packs to restore optimal spark energy, eliminate misfires under heavy load, and ensure consistent combustion across all cylinders.

The Stock Yukon Thermal Degradation Problem

The 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.

The Engineering Solution

These 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.

Technical Specifications

Compatibility

• 2000-2006 GMC Yukon 4.8L V8 (Round D585 Style)
• 2000-2006 GMC Yukon 5.3L V8 (Round D585 Style)
• 2001-2006 GMC Yukon 6.0L V8 (Round D585 Style)

The GMC Heavy-Duty Standard

Built 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.

Common Questions

Will these ignition coils fit my 2000-2006 GMC Yukon 4.8L, 5.3L, or 6.0L V8?
Yes, these direct-fit D585 / UF262 ignition coils are engineered for the 2000-2006 GMC Yukon equipped with the Gen III Vortec 4.8L (LR4), 5.3L (LM7), or 2001-2006 6.0L (LQ4) V8 engine.

Do I need to splice any wires to install these on my GMT800 Yukon?
Installation is completely plug-and-play with zero splicing required. Each coil features a direct-fit bolt-on housing with standard oval female connectors and 4-blade male terminals that plug straight into the factory GMT800 wiring harness.

Which factory part numbers do these coils replace?
They directly replace OEM and aftermarket cross-reference numbers including D585, UF262, UF262T, 10457730, 19005218, 12563293, GN10119, and C1251.

How do these upgraded coils handle engine bay heat compared to stock?
They are built with a high-temperature dielectric polymer housing and advanced epoxy resin potting to resist thermal breakdown, micro-cracking, and vibration right above the exhaust manifolds.

Will these fit a 2000 GMC Yukon with the 5.7L V8?
These coils are built specifically for the GMT800 platform equipped with Gen III Vortec 4.8L, 5.3L, and 6.0L V8 engines using 4-pin oval harness connectors.