Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC2010SAVANA G2500, VAN CARGO EXTENDED, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 7 (ENGINE CONTROLS AND FUEL - 4.8L, 5.3L, 6.0L, 6.2L, OR 7.0L - TROUBLESHOOTING AND DIAGNOSIS)ELECTRONIC IGNITION SYSTEM DIAGNOSISCIRCUIT/SYSTEM VERIFICATION
2010 GMC Savana G2500, Van Cargo Extended, 6.6 6
Circuit/System Verification
2010 GMC Savana G2500, Van Cargo Extended, 6.6 6SECTION Circuit/System Verification
WARNING: This page is about a different variant/trim than selected.
Observe the Engine Controls Schematic for the ignition module/coils, and review the Ignition System Specifications to verify the following concerns:
- The ignition modules/coils are correctly wired and connected
- The proper spark plug type
- The proper spark plug gap and torque
- The proper ohm values for the spark plug wires
Refer to Ignition System Specifications .
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.