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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls - 6.6L - Troubleshooting & Diagnosis) >> Inspection/Maintenance (I/M) System Check >> Circuit/System Verification

Circuit/System Verification

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Review the I/M system status indicators. All I/M system status indictors should report YES.

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