GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Engine 🢒 Engine Mechanical - 5.7L 🢒 Oil Level Indicator Tube Replacement

Removal Procedure

    Object Number: 379369 Size: SH
  1. Disconnect the secondary air injection (AIR) pump hose from the check valve hose.

    2. Object Number: 346024 Size: SH
  2. Remove the AIR valve hose clamps and hose.

    3. Object Number: 346029 Size: SH
  3. Remove the AIR pipe (with check valve ), bolts and gasket from the right exhaust manifold.
  4. Remove the number 4 and 6 spark plug wires.

    5. Object Number: 309850 Size: SH
  5. Remove the number 4 and 6 ignition coils from the coil bracket.

    6. Object Number: 220593 Size: SH
  6. Remove the oil level indicator from the tube.

    7. Object Number: 178459 Size: SH
  7. Remove the oil level indicator tube bolt.
  8. Remove the indicator tube from the engine block.
  9. Remove the O-ring from the tube.

Installation Procedure

    Object Number: 178459 Size: SH
  1. Clean the indicator tube.
  2. Install a new O-ring to the tube.
  3. Install the oil level indicator tube.
  4. Rotate the tube into the proper position.
  5. Install the oil level indicator tube bolt.

    6. Tighten
    Tighten the oil level indicator tube bracket bolt to 25 N·m (18 lb ft).


    Object Number: 220593 Size: SH
  6. Install the indicator to the tube.

    7. Object Number: 309850 Size: SH
  7. Install the number 4 and 6 ignition coils to the coil bracket.

    8. Tighten
    Tighten the ignition coil bolts to 12 N·m (106 lb in).

  8. Install the number 4 and 6 spark plug wires.

    9. Object Number: 346029 Size: SH
  9. Install the AIR pipe (with check valve ), bolts and gasket from the right exhaust manifold.

    10. Tighten
    Tighten the AIR pipe to exhaust manifold bolts th 20 N·m (15 lb ft).


    Object Number: 346024 Size: SH
  10. Install the AIR valve hose and clamps.

    11. Object Number: 379369 Size: SH
  11. Connect the AIR pump hose to the check valve hose.