Ignition Coil and Iridium Spark Plugs for GMC Terrain (2010-2017) 2.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2010-2017 GMC Terrain

What it Does: Replaces deteriorating factory ignition coils and worn plugs to eliminate cylinder misfires, restore lost combustion efficiency, and stabilize idle across all four cylinders.

The Stock Terrain Ignition Vulnerability

The 2.4L Ecotec engine subjects factory coil-on-plug packs to extreme cylinder-head thermal cycling, accelerating micro-fractures in the epoxy casing and degrading primary winding resistance. Simultaneously, factory spark plug ground electrodes erode under high direct-injection cylinder pressures, widening the gap. This gap enlargement forces the ignition coils to work harder, triggering dielectric breakdown, secondary voltage leakage, sluggish throttle response, and persistent P0300 through P0304 misfire codes.

The Engineering Solution

This complete ignition kit matches heavy-duty coil packs featuring high-conductivity copper windings with precision fine-wire iridium spark plugs. The reinforced coil housings and heat-resistant silicone boots prevent dielectric punch-through under high thermal loads. Paired with ultra-durable iridium center electrodes that require lower firing voltage, this setup guarantees stable flame kernel propagation, crisp throttle response, and complete fuel burn under load.

Technical Specifications

Compatibility

• 2010-2017 GMC Terrain SL (2.4L I4)
• 2010-2017 GMC Terrain SLE (2.4L I4)
• 2010-2017 GMC Terrain SLT (2.4L I4)
• 2013-2017 GMC Terrain Denali (2.4L I4)

The GMC Durability Standard

Engineered to withstand daily commuter demands and sustained highway towing, this ignition kit delivers reliable cold-cranking performance, maximum fuel efficiency, and seamless operation without triggering check engine lights.