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Home >> Pontiac >> 2009 >> G8 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System & Navigation 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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