High Performance Ignition Coils for GMC Savana 1500 2500 3500 (2003-2007) 4.8L 5.3L 6.0L

High-Output Ignition Coils for 2003-2007 GMC Savana (Vortec V8 / GMT610)

What it Does: Delivers a hotter, more consistent spark to replace aging factory coils, eliminating misfires and restoring pulling power for heavy-duty hauling.

The Stock Savana Ignition Weakness

The GMT610 chassis packages the Vortec V8 deep inside a heavily shrouded "doghouse" engine bay, creating an environment notorious for extreme heat soak. Over thousands of miles, the factory ignition coils suffer from severe thermal degradation. The internal epoxy potting eventually cracks, increasing electrical resistance and leading to high-rpm misfires, rough idling under load, and significantly reduced fuel efficiency. When towing or hauling heavy payloads, this compromised spark output forces the engine to work harder, burning more fuel and sapping the low-end torque essential for a commercial or heavy-use van.

The Engineering Solution

These high-performance replacement coils are engineered to resolve the thermal limitations of the factory units. By utilizing upgraded internal copper windings and high-temperature epoxy potting, these coils maintain optimal resistance values even in the sweltering heat of the Savana engine bay. The enhanced electronic blade design and 4-terminal oval connector ensure maximum voltage transfer directly to the spark plug. This translates to a fatter, hotter spark capable of fully igniting the air-fuel mixture, smoothing out the idle, eliminating hesitation, and fully restoring the engine's torque curve for demanding driving conditions. The bolt-on design ensures a hassle-free drop-in installation with zero modifications required.

Technical Specifications

Compatibility & Cross-Reference

• 2003-2007 GMC Savana 1500 (5.3L)
• 2003-2007 GMC Savana 2500 (4.8L, 5.3L, 6.0L)
• 2003-2007 GMC Savana 3500 (4.8L, 6.0L)

Replaces OEM & Aftermarket Part Numbers: 920-1020, 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

The GMC Hauling Standard

Built for the long haul, the GMC Savana demands reliable power when loaded down with cargo or pulling a heavy trailer. Upgrading your ignition coils ensures that your Vortec V8 delivers maximum torque, unyielding durability, and steadfast reliability shift after shift, mile after mile.