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Home >> Chevrolet >> 2005 >> TrailBlazer 4.2 S, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.2L - Troubleshooting & Diagnosis >> Troubleshooting >> Inspection/Maintenance (I/M) Catalyst System Set Procedure >> Description
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Inspection/Maintenance (I/M) Catalyst System Set Procedure: Description

The purpose of this test is to satisfy the enable criteria necessary to execute inspection/maintenance (I/M) readiness diagnostics for the catalyst system. The test may be used to set the I/M System Status indicators to YES.