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Home >> Chevrolet >> 2008 >> Impala LTZ >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.9L - DTC P0340 To DTC P3400 >> DTC P3400 >> Circuit/System Testing >> Electrical System Testing
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Electrical System Testing

  1. If DTCs P3401, P3417, or P3433 are set, then refer to DTC P3401, P3417, or P3433 .
  2. Ignition ON, engine OFF, command each valve lifter oil manifold (VLOM) solenoid ON, and OFF. While standing next to the engine compartment, you should be able to hear the solenoids energize, and de-energize with each command.
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