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GMC
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1997
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Forward Control 7.4 J
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Repair and Diagnosis
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Different variant/trim
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Section 1 (Engine Controls - Specifications - 5.7L (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
WARNING:
This page is about a different variant/trim than selected.
NOTE:
Ignition timing is controlled by control module and is not adjustable.