GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Except AWD Vehicles


    Object Number: 2016470  Size: SH
  1. Disconnect the fuel tank vent hose (1) from the charcoal canister.

  2. Object Number: 2016471  Size: SH
  3. Disconnect the vapor pressure sensor connector (1).
  4. Disconnect the wire harness clamp (3).
  5. Disconnect the purge line hose (2).

  6. Object Number: 2016473  Size: SH
  7. Disconnect the charcoal canister filter assembly (3) from the charcoal canister.

  8. Object Number: 2016474  Size: SH
  9. Remove the 3 bolts (1-3) and charcoal canister assembly.

AWD Vehicles


    Object Number: 2016497  Size: SH
  1. Disconnect the fuel tank vent hose (1) from the charcoal canister.
  2. Disconnect the vapor pressure sensor connector (2).

  3. Object Number: 2016500  Size: SH
  4. Disconnect the charcoal canister filter assembly (3) from the charcoal canister.
  5. Disconnect the purge line (2).

  6. Object Number: 2016505  Size: SH
  7. Remove the 3 bolts (1-3) and charcoal canister assembly.

Inspection Procedure


    Object Number: 2016475  Size: SH
  1. Visually check the charcoal canister for cracks or damage.
  2. If cracks or damage are found, replace the charcoal canister assembly.


    Object Number: 2016476  Size: SH
  3. Check the charcoal canister operation.
  4. With the purge port closed, blow 1.10 kPa (0.16 psi) of air into the vent port (3), and check that air flows from the air inlet port (2). If the result is not as specified, replace the charcoal canister assembly.

  5. Object Number: 2016478  Size: SH
  6. With the vent port (3) closed, blow 1.10 kPa (0.16 psi) of air into the air inlet port (2), and check that air flows from the purge port (1). If the result is not as specified, replace the charcoal canister assembly.

  7. Object Number: 2016480  Size: MH
  8. Check for air leakage.
  9. With the purge port (2) and air inlet port (3) closed, apply 19.6 kPa (2.81 psi) of pressurized air into the vent port, then confirm that pressure is retained for 1 minute. If the result is not as specified, replace the charcoal canister assembly.

Installation Procedure

AWD Vehicles

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2016505  Size: SH
  1. Install the charcoal canister assembly with the 3 bolts.
  2. Tighten
    Tighten the bolts to 19 N·m(14 lb ft).


    Object Number: 2016500  Size: SH
  3. Connect the purge line (2).
  4. Connect the charcoal canister filter assembly to the charcoal canister (3).

  5. Object Number: 2016497  Size: SH
  6. Connect the vapor pressure sensor connector (2).
  7. Connect the fuel tank vent hose (1) to the charcoal canister assembly.

Except AWD Vehicles


    Object Number: 2016474  Size: SH
  1. Install the charcoal canister assembly with the 3 bolts (1-3).
  2. Tighten
    Tighten the bolts to 19 N·m (14 lb ft)


    Object Number: 2016473  Size: SH
  3. Connect the charcoal canister filter assembly to the charcoal canister (3).

  4. Object Number: 2016471  Size: SH
  5. Connect the purge line hose (2).
  6. Connect the wire harness clamp (3).
  7. Connect the vapor pressure sensor connector (1).

  8. Object Number: 2016470  Size: SH
  9. Connect the fuel tank vent hose (1) to the charcoal canister.