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Home › Pontiac › 2008 › Grand Prix GXP › Repair and Diagnosis › Engine Performance › System › Engine Controls And Fuel - 5.3L - DTC P0420 To DTC P3449 › DTC P3400 › Circuit/System Testing › Notes

Circuit/System Testing: Notes

If you cannot hear each solenoids energize and de-energize, then refer to Cylinder Deactivation (Active Fuel Management) System Diagnosis .