GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2006 🢒 XLR 🢒 Engine 🢒 Engine Controls - 4.4L 🢒 Evaporative Emission Hose/Pipe Replacement - Tank/Tank

Removal Procedure

    Object Number: 903412 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  3. Remove the fuel tank crossover tube. Refer to Fuel Tank Crossover Tube Replacement .
  4. Disconnect the evaporative emission (EVAP) pipe (2) at the right tank EVAP pipe (3) and the left tank EVAP pipe (1). Refer to Plastic Collar Quick Connect Fitting Service .
  5. Remove the rear EVAP pipe (2).
  6. Cap the open pipes in order to prevent possible contamination.

Installation Procedure

    Object Number: 903412 Size: SH

    Notice: Replace the EVAP pipes and hoses with the original equipment or parts that meet the GM specifications for those parts. The replacement EVAP pipe must have the same type of fittings as the original pipe in order to ensure the integrity of the connection. When replacing EVAP hoses, use only reinforced fuel-resistant hose identified with the word Fluoroelastomer or GM 6163-M on the hose. The inside hose diameter must match the outside pipe diameter. Do not use rubber hose within 100 mm (4 in) of any part of the exhaust system or within 254 mm (10 in) of the catalytic converter.

  1. Remove the caps from the pipes.
  2. Connect the EVAP pipe (2) at the right tank EVAP pipe (3) and the left tank EVAP pipe (1). Refer to Plastic Collar Quick Connect Fitting Service .
  3. Install the fuel tank crossover tube. Refer to Fuel Tank Crossover Tube Replacement .
  4. Tighten the fuel filler cap.
  5. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  6. Program the transmitters. Refer to Transmitter Programming .