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Home >> GMC >> 2004 >> Jimmy 2D Utility, Automatic, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 4.3L (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 I/M readiness diagnostics for the Catalyst System. The test may be used to set the I/M System Status indicators to YES.

The I/M System Status Display on the scan tool provides an indication of whether the control module has completed the required tests. The I/M System Status does not indicate that the tests have passed or failed. When all of the diagnostics for a specific system have run and passed the I/M System Status will update to YES, indicating a determination was made, even if all of the other tests for that system have not run.