GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 STS 🢒 Engine 🢒 Engine Controls and Fuel - 4.4L 🢒 Evaporative Emission Canister Replacement

Removal Procedure
  1. Remove the rear frame. Refer to Rear Frame Replacement.

    2. Object Number: 785817 Size: SH
  2. Disconnect the evaporative emission (EVAP) hoses from the EVAP canister.
  3. Disconnect the electrical connector from the EVAP canister vent solenoid valve.
  4. Disconnect the electrical connector from the fuel tank pressure sensor located on the EVAP canister.

    5. Object Number: 785820 Size: SH
  5. Remove the EVAP canister retaining nuts.
  6. Complete the following in order to remove the EVAP canister:
    7. 6.1. Lower the rear of the canister enough to clear the 2 weld studs.
    6.2. Slide the canister rearward from the body brace.

Installation Procedure

    Object Number: 785820 Size: SH
  1. Complete the following in order to install the EVAP canister:
    2. 1.1. Insert the fresh air tube and tab on the canister forward into the body brace.
    1.2. Rotate the rear of the canister up over the 2 weld studs on the floor pan.

    Caution: Refer to Fastener Caution in the Preface section.

  2. Install the EVAP canister retaining nuts and tighten to 6 N·m (53 lb in).

    3. Object Number: 785817 Size: SH
  3. Connect the EVAP hoses to the EVAP canister.
  4. Connect the fuel tank pressure sensor electrical connector.
  5. Connect the electrical connector to the EVAP canister vent solenoid valve.
  6. Install the rear frame. Refer to Rear Frame Replacement.