Operation CHARM
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GMC Truck
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1994
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S15/T15 Sonoma P/U 2WD L4-134 2.2L
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Repair and Diagnosis
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Maintenance
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Tune-up and Engine Performance Checks
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Ignition Timing
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Specifications
Ignition Timing: Specifications
N/A
Ignition timing
is computer controlled and is not adjustable.