GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 Engine 🢒 Engine Controls - 4.0L and 4.6L 🢒 Evaporative Emission Canister Hoses

Removal Procedure

Caution: Provide additional support when a vehicle is on a hoist:

   • Before removing parts, support the opposite end. This helps prevent the vehicle from slipping off.
   • Before removing major components, chain the vehicle frame to the hoist pads at the same end as the removal. This helps avoid a tip-off.
Failure to follow these precautions could cause vehicle damage, serious personal injury, or death.

Notice: Do Not attempt to repair the EVAP pipes or the connecting hoses. Replace the damaged EVAP pipes or the connecting hoses are damaged. If the nylon EVAP pipe becomes kinked and cannot be straightened, it must be replaced.


    Object Number: 104621 Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the hardware retaining the EVAP pipe/hose or disconnect the quick connect (1,2,3).
  3. Note the location of the attaching hardware for installation.
  4. Remove the EVAP pipe/hose.
  5. Inspect the pipe/hoses for one or more of the following conditions:
    6. • Cuts
    • Swelling
    • Cracks
    • Distortion
    • Bends
    • Kinks
  6. Replace the pipe/hoses as required.

Installation Procedure

    Object Number: 104621 Size: SH

    Notice: Properly secure the EVAP pipe in order to prevent chafing of the pipe.

    Important: Route the replacement EVAP pipe in the same manner as the original EVAP pipe was routed.

  1. Install the EVAP pipe/hose (1,2,3).
  2. Connect the quick connect or reinstall the hardware retaining the EVAP pipe/hose.
  3. Lower the vehicle.