GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission Hoses/Pipes Replacement - Engine L36

Removal Procedure

  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.

  2. Object Number: 486596  Size: SH
  3. Remove the hardware retaining the evaporative emission (EVAP) pipes, if applicable.
  4. Inspect the location of the attaching hardware for installation.
  5. Remove the EVAP pipe/hoses.
  6. Inspect the pipe/hoses for bends, kinks, and cracks.
  7. Replace the pipes/hoses as required.

Installation Procedure


    Object Number: 486596  Size: SH
  1. Install the EVAP pipe/hoses.
  2. Install the hardware retaining the EVAP pipe/hoses.
  3. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.

Evaporative Emission Hoses/Pipes Replacement - Engine L67

Removal Procedure

Important: If the nylon evaporative emission (EVAP) pipe becomes kinked and cannot be straightened, the pipe must be replaced. DO NOT attempt to repair the EVAP pipes or the connecting hoses. Replace the damaged EVAP pipes or the connecting hoses that are damaged.

  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.

  2. Object Number: 65853  Size: SH
  3. Remove the hardware retaining the EVAP pipe/hose (4).
  4. Inspect the location of the attaching hardware for installation.
  5. Remove the EVAP pipe/hose (5).
  6. Inspect the pipe/hose for bends, kinks, and cracks.
  7. Replace the pipes/hose as required.

Installation Procedure


    Object Number: 65853  Size: SH

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

  1. Install the EVAP pipe/hose (5).
  2. Install the hardware retaining the EVAP pipe/hose (4).
  3. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.