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Home >> GMC >> 1998 >> C3500 HD 7.4 J, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing 7.4L >> Miscellaneous Pcm/VCM Controls >> Notes
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Miscellaneous Pcm/VCM Controls: Notes

NOTE: Although not considered true engine performance-related systems, some controlled devices may affect driveability if they malfunction.
NOTE: Manufacturer does not supply many individual component tests. For component tests that are not listed, perform appropriate DTC test. See TROUBLE CODE DEFINITION  table in TESTS W/CODES - 7.4L article.
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