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Home >> GMC >> 1998 >> Forward Control 5.7 R, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures - 5.7L >> Idle Speed & Ignition Timing
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Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specifications. For specifications, see SPECIFICATIONS - 5.7L article. For adjustment procedures, see ADJUSTMENTS - 5.7L article.

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