Ignition Coil & Iridium Spark Plugs for GMC Canyon (2007-2012) 3.7L I5

High-Output Ignition Coil & Iridium Spark Plugs for 2007-2012 GMC Canyon (LLR / GMT355)

What it Does: Replaces degrading OEM coil packs and worn spark plugs to restore optimal combustion efficiency, eliminate misfires, and stabilize idle in the 3.7L Atlas inline-five engine.

The Stock Canyon Ignition Weakness

Factory ignition coils on the GMT355 platform frequently suffer from thermal degradation due to their mounting location directly above the cylinder head. Over thousands of heat cycles, the epoxy potting compound breaks down, leading to micro-cracking in the primary and secondary windings. This creates internal electrical resistance, reducing spark energy output and triggering P0300-series random misfire codes. Furthermore, standard factory plugs erode under high-load conditions, widening the spark gap. This results in delayed flame front propagation, poor fuel economy, and noticeable power loss when towing or climbing steep grades.

The Engineering Solution

This complete Aero ignition suite addresses OEM shortcomings by pairing direct-replacement, high-resistance ignition coils with precision-gapped Iridium spark plugs. The upgraded coils feature superior thermal epoxy and enhanced copper windings to step up voltage output without excessive heat retention, maintaining a consistent spark under continuous high-load truck applications. The Iridium center electrodes offer an extremely high melting point, drastically reducing electrode wear and maintaining a precise gap over an extended service life. The result is a concentrated, high-energy spark that promotes a faster, more complete combustion event, effectively restoring factory horsepower and torque metrics while minimizing unburned hydrocarbon emissions.

Technical Specifications

Compatibility

• 2007 GMC Canyon 3.7L I5
• 2008 GMC Canyon 3.7L I5
• 2009 GMC Canyon 3.7L I5
• 2010 GMC Canyon 3.7L I5
• 2011 GMC Canyon 3.7L I5
• 2012 GMC Canyon 3.7L I5

The GMC Durability Standard

Designed for the rigorous demands of the Atlas I5 powertrain, this ignition upgrade ensures your GMT355 maintains reliable towing capability, consistent idle quality, and dependable all-weather starting performance under heavy workloads.