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Home › GMC › 1998 › C3500 HD 7.4 J, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls - System & Component Testing 7.4L › Computerized Engine Controls › Control Unit › Notes

Control Unit: Notes

NOTE: To identify circuits referenced in the following ground and power tests, use wiring diagram in WIRING DIAGRAMS - 7.4L article.
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