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Home >> GMC >> 1998 >> Forward Control 6.5 F >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls - Basic Diagnostic Procedures - 5.7L) >> Idle Speed & Ignition Timing
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Idle Speed & Ignition Timing

WARNING: This page is about a different variant/trim than selected.

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.