Suburban 3/4 Ton 4WD V8-6.0L VIN U (2004)
Information Bus: Initial Inspection and Diagnostic Overview
DIAGNOSTIC STARTING POINT
Begin the diagnosis of the Data Link Communications by performing the Diagnostic System Check for the system in which the customer concern is
apparent. The Diagnostic System Check will direct you to the correct procedure within the Data Link Communications section when a communication
malfunction is present.
