GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1704518  Size: SH
  1. Remove the left side engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Disconnect the quick connect fitting (1) at the front of dash. Refer to Plastic Collar Quick Connect Fitting Service .

  3. Object Number: 329553  Size: SH
  4. Disconnect the chassis fuel bundle retainer (1) from the upper front of dash mounting stud (3).
  5. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  6. Remove the exhaust intermediate pipe. Refer to Intermediate Pipe Replacement .

  7. Object Number: 67894  Size: SH
  8. Remove the driveline closeout panel. Refer to Floor Panel Tunnel Panel Reinforcement Replacement .

  9. Object Number: 329574  Size: SH
  10. Disconnect the front chassis vacuum line from the underbody retainers (6).

  11. Object Number: 1704521  Size: SH
  12. Disconnect the front chassis vacuum line quick connect fitting (1) located on the left side of the vehicle, forward of the rear drive module. Refer to Plastic Collar Quick Connect Fitting Service .
  13. Remove the front chassis vacuum line from the vehicle.

Installation Procedure


    Object Number: 1704521  Size: SH
  1. Install the front chassis vacuum line to the vehicle.
  2. Connect the front chassis vacuum line quick connect fitting (1). Refer to Plastic Collar Quick Connect Fitting Service .

  3. Object Number: 329574  Size: SH
  4. Connect the front chassis vacuum line to the underbody retainers (6).

  5. Object Number: 67894  Size: SH
  6. Install the driveline closeout panel. Refer to Floor Panel Tunnel Panel Reinforcement Replacement .

  7. Object Number: 329553  Size: SH
  8. Install the exhaust intermediate pipe. Refer to Intermediate Pipe Replacement .
  9. Lower the vehicle.
  10. Connect the chassis fuel bundle retainer (1) to the upper front of dash mounting stud (3).

  11. Object Number: 1704518  Size: SH
  12. Connect the quick connect fitting (1) at the front of dash. Refer to Plastic Collar Quick Connect Fitting Service .
  13. Install the left side engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .