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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - 8.1L - Introduction (2 Of 2)) >> Repair Instructions >> Evaporative Emission (EVAP) System Cleaning >> EVAP Cleaning Procedure

EVAP Cleaning Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the EVAP canister. Refer to Evaporative Emission (EVAP) Canister Replacement (Pickup)  or Evaporative Emission (EVAP) Canister Replacement (Cab/Chassis) .
  2. Turn OFF the main valve on the J 41413-200  .
  3. Disconnect the hose from the diagnostic station pressure regulator.
  4. Using a section of vacuum hose, connect one end to the diagnostic station pressure regulator.
  5. Connect the other end of the vacuum hose to the canister side of the purge pipe.
  6. Turn on the main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds.
  7. If the nitrogen does not dislodge the carbon particles, replace the purge pipe. Refer to Evaporative Emission (EVAP) Hoses/Pipes Replacement - Engine .
  8. Return the J 41413-200  to its original condition.
  9. Install a new EVAP canister. Refer to Evaporative Emission (EVAP) Canister Replacement (Pickup)  or Evaporative Emission (EVAP) Canister Replacement (Cab/Chassis) .
  10. Install the EVAP canister purge valve. Refer to Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement .
  11. Lower the vehicle.
  12. Continue with the published service manual diagnostic DTC procedure.
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