Operation CHARM
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Pontiac Truck
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1996
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Trans Sport V6-3.4L VIN E
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Ignition Timing
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Specifications
Ignition Timing: Specifications
In IC mode, timing is controlled by PCM. In bypass mode, ignition system works independently from PCM and spark advance is fixed at 10° BTDC.