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Home >> Chevrolet >> 2002 >> Chevy Express G2500, Van Cargo Extended, 6.5 F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 6.5L >> Self-Diagnostic System >> Diagnostic System Check - Engine Controls >> Description
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Diagnostic System Check - Engine Controls: Description

NOTE: Cab and Chassis vehicles are not OBD-II compliant and Inspection/Maintenance procedures do not apply.

The Diagnostic System Check is an organized approach to identifying a condition that is created by a malfunction in the powertrain control system. The Diagnostic System Check must be the starting point for any driveability concern. The Diagnostic System Check directs the service technician to the next logical step in order to diagnose the concern. Understanding and correctly using the diagnostic table reduces diagnostic time, and prevents the replacement of good parts.

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