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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Controls And Fuel - 3.5L - Repair Instructions) >> Repair Instructions >> Evaporative Emission System Cleaning >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Do not perform this procedure unless instructed by an evaporative emission (EVAP) diagnostic.
  1. Turn OFF the ignition.
  2. Remove the EVAP canister purge solenoid. Refer to Evaporative Emission Canister Purge Solenoid Valve Replacement .
  3. Lightly tap the EVAP canister purge valve on a clean hard surface.
  4. Inspect for carbon particles exiting either of the vacuum ports.