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Home >> GMC >> 1991 >> Safari Van Cargo Extended, 4.3 B, 4L60/MD8 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Miscellaneous ECM Controls >> Notes
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Miscellaneous ECM Controls: Notes

NOTE: Although not considered true engine performance-related systems, some controlled devices may affect driveability if they malfunction.
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