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Home >> Chevrolet >> 2005 >> Optra5 Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.6L (L91) - Introduction And Mechanical Repairs >> Description and Operation >> Engine Control Module (ECM) Description >> Intrusive Diagnostic Tests
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Intrusive Diagnostic Tests

This is any on-board test run by the diagnostic management system which may have an effect on vehicle performance or emission levels.

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