GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Warning: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

Warning: Do not allow smoking or the use of open flames in the area where work on the fuel or EVAP system is taking place. Anytime work is being done on the fuel system, disconnect the negative battery cable, except for those tests where battery voltage is required.

Warning: Whenever fuel lines are removed, catch fuel in an approved container. Container opening must be a minimum of 300 mm (12  in) diameter to adequately catch the fluid.

Caution: Fuel/Vapor lines cannot be spliced or repaired. The line must be replaced (if damaged) with the same type of line.


    Object Number: 1885563  Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  3. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  4. Disconnect the chassis fuel feed line quick connect fitting (2) from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service.
  5. Disconnect the chassis evaporative emission (EVAP) line quick connect fitting (3) from the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.
  6. Remove the retaining clip (1) attached to the manifold absolute pressure (MAP) sensor bracket.

  7. Object Number: 1885564  Size: SH
  8. Remove the rear brake pipe fittings (1) from the brake pressure modulator valve (BPMV).
  9. Cap the brake pipe fittings and plug the BPMV outlet ports in order to prevent brake fluid loss and contamination.

  10. Object Number: 1885087  Size: SH
  11. Remove the fuel tank. Refer to Fuel Tank Replacement.
  12. Disconnect the body wiring harness electrical connector (1) from the fuel pressure sensor.

  13. Object Number: 1885584  Size: SH
  14. Disconnect the chassis EVAP line quick connect fitting (1) from the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.

  15. Object Number: 1885565  Size: SH
  16. Remove the rear brake pipe fitting (2) from the rear brake crossover pipe fitting (1).
  17. Cap the brake pipe fittings in order to prevent brake fluid loss and contamination.

  18. Object Number: 1885566  Size: SH
  19. Remove the rear brake pipe (2) fitting from the rear brake hose fitting (1).
  20. Cap the brake pipe fittings in order to prevent brake fluid loss and contamination.

  21. Object Number: 1885596  Size: SH
  22. Remove the brake, fuel and EVAP line retainers (1) from the underbody and side rail.
  23. Remove the brake, fuel and EVAP line retainers (2) from the underbody studs.
  24. Remove the brake line retainers (3) from the underbody side rail.

  25. Object Number: 1885585  Size: SH
  26. Remove the brake, fuel and EVAP line bundle (1) from the vehicle.

  27. Object Number: 1885599  Size: SH
  28. Open the upper fuel and EVAP line clip.
  29. Remove the chassis EVAP line (2) from the retainers.

Installation Procedure


    Object Number: 1885599  Size: SH
  1. Install the chassis EVAP line (2) to the retainers.
  2. Close the upper fuel and EVAP line clip.

  3. Object Number: 1885585  Size: SH
  4. Install the brake, fuel and EVAP line bundle (1) to the vehicle.

  5. Object Number: 1885596  Size: SH
  6. Install the brake, fuel and EVAP line retainers (1) to the underbody and side rail.
  7. Install the brake, fuel and EVAP line retainers (2) to the underbody studs.
  8. Install the brake line retainers (3) to the underbody side rail.

  9. Object Number: 1885566  Size: SH
  10. Remove the caps from the brake pipe fittings.
  11. Caution: Refer to Fastener Caution in the Preface section.

  12. Install the rear brake pipe (2) fitting to the rear brake hose fitting (1).
  13. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).


    Object Number: 1885565  Size: SH
  14. Remove the caps from the brake pipe fittings.
  15. Install the rear brake pipe fitting (2) to the rear brake crossover pipe fitting (1).
  16. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).


    Object Number: 1885584  Size: SH
  17. Connect the chassis EVAP line quick connect fitting (1) to the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.

  18. Object Number: 1885087  Size: SH
  19. Connect the body wiring harness electrical connector (1) to the fuel pressure sensor.
  20. Install the fuel tank. Refer to Fuel Tank Replacement.

  21. Object Number: 1885564  Size: SH
  22. Remove the caps and plugs from the brake pipe fittings and the BPMV outlet ports.
  23. Install the rear brake pipe fittings (1) to the BPMV.
  24. Tighten
    Tighten the fittings to 21 N·m (16 lb ft).


    Object Number: 1885563  Size: SH
  25. Connect the chassis fuel feed line quick connect fitting (2) to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service.
  26. Connect the chassis EVAP line quick connect fitting (3) to the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.
  27. Install the retaining clip (1) to the MAP sensor bracket.
  28. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  29. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  30. Use the following procedure in order to inspect for leaks:
  31. 21.1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    21.2. Turn the ignition OFF for 10 seconds.
    21.3. Turn the ignition ON, with the engine OFF.
    21.4. Inspect for fuel leaks.
  32. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement.