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Home >> GMC >> 2021 >> Terrain SLE, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> Inspection/Maintenance Complete System Set Procedure >> Circuit/System Description
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Circuit/System Description

Several states require for a vehicle to pass on-board diagnostic (OBD) system tests and inspection/maintenance (I/M) emission inspections in order to renew license plates. This is accomplished by viewing the Inspection/Maintenance System Status or Data display on a scan tool. Using a scan tool, the technician can observe the I/M status in order to verify that the vehicle meets the criteria that complies with the local area requirements.

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