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GMC
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1997
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C3500 HD 6.5 F, Standard
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Repair and Diagnosis
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External Pages
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Different variant/trim
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Section 1 (Engine Controls - Specifications - 7.4L)
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Ignition Timing
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.