Operation CHARM
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GMC Truck
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1984
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S15/T15 2WD P/U L4-121 2.0L VIN Y 2-bbl
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Spark Plug
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Specifications
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Torque
Torque
Plug Tightening Torque
7-19 Foot Pound-Force (ft.lb)