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Home › GMC › 1996 › Forward Control 7.4 J › Repair and Diagnosis › Engine Performance › System › Engine Controls - Basic Engine Testing - P Series (Diesel) › On-Board Diagnostic (OBD) System Check › Notes

On-Board Diagnostic (OBD) System Check: Notes

NOTE: Use of Tech 1 scan tool is required to perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK.
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