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Home › Chevrolet › 2011 › Caprice › Repair and Diagnosis › Engine Performance › System › Data Communications System › Diagnostic Information and Procedures › DTC U2121 › Circuit/System Verification

Circuit/System Verification

  1. Verify that DTC U2121 is not set.
    • If the DTC is set, replace the driver information display. If the DTC resets, replace the radio.
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