Inspection/Maintenance Diagnostic System Check

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana Special, 2001 GMC Savana Camper Special, and 2001 GMC Savana. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Many DTC related repairs will instruct the technician to clear DTC information. This procedure will reset all Inspection/Maintenance (I/M) system status indicators to NO, and require performing the I/M complete system set procedure.

If engine controls diagnostic system check has been performed, go to next step. If engine controls diagnostic system check has not been performed, go to ENGINE CONTROLS DIAGNOSTIC SYSTEM CHECK . Repair any DTCs or driveability concerns which would prevent I/M system status tests from completing. If no DTCs or driveability concerns exist, go to next step. If any DTCs or driveability concerns were found and repaired, go to step 3 .
Review any service bulletins for software updates which may prevent I/M readiness. Perform any reprogramming or repairs indicated by service bulletins. If a reprogramming or repair service was not required, go to next step. If a reprogramming or repair service was required, see INSPECTION/MAINTENANCE SYSTEM CHECK in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
Using scan tool, observer I/M system status display. If more than one test indicates a NO status, go to If a reprogramming or repair service was required, see INSPECTION/MAINTENANCE SYSTEM CHECK in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no or only one test indicate a NO status, go to appropriate I/M system set procedure for indicated system. See INSPECTION/MAINTENANCE SYSTEM CHECK in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.