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GMC
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1997
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Forward Control 6.5 F
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Repair and Diagnosis
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Engine Performance
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Adjustment
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Engine Adjustments - 7.4L (P Series)
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Ignition Timing
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Ignition Timing
NOTE:
Ignition timing is controlled by control module and is not adjustable.