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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 3.5L - DTC P0341 Through DTC P2544) >> DTC P0443 or P0449 >> Circuit/System Verification >> P0449

Circuit/System Verification: P0449

WARNING: This page is about a different variant/trim than selected.
  1. With the ignition ON and the engine OFF, command the EVAP vent solenoid ON and OFF with a scan tool.
  2. Listen for a click when the valve operates. Verify that both the ON, and the OFF states are commanded.