GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Engine Mechanical - 5.0L and 5.7L 🢒 Oil Level Indicator Tube Replacement

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Remove the PCV tube from the air cleaner outlet duct.
  3. Remove the air cleaner outlet duct from the throttle body. Refer to Air Cleaner Outlet Duct Replacement in Engine Controls.

    4. Notice: Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.

  4. Remove the spark plug wire from cylinder number 4 spark plug.
    5. 4.1. Rotate the spark plug wire boot ½ turn.
    4.2. Pull outward on the spark plug wire boot to release from the spark plug.

    Object Number: 345189 Size: SH
  5. Remove the spark plug from the number 4 cylinder.
  6. Remove the oil level indicator from oil level indicator tube.
  7. Remove the oil level indicator tube bolt.
  8. Remove the oil level indicator tube from the engine block using a twisting motion.
  9. Clean the old sealant from the oil level indicator tube and the engine block.

Installation Procedure

    Object Number: 176058 Size: SH
  1. Apply sealant, GM P/N 12346004 or equivalent, around the oil level indicator tube 13 mm (0.5 in) below the tube collar.
  2. Install the oil level indicator tube to the engine block.

    3. The indicator tube collar must be installed flush to the engine block.

  3. Line up the oil level indicator tube with the spark plug retainer.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the bolt.

    5. Tighten
    Tighten the oil level indicator tube bolt to 12 N·m (106 lb in).


    Object Number: 345189 Size: SH
  5. Install the spark plug in the number 4 cylinder.

    6. Tighten
    Tighten the spark plug to 20N·m (15 lb ft).

  6. Install the spark plug wire.
  7. Install the air cleaner outlet duct to the throttle body. Refer to Air Cleaner Outlet Duct Replacement in Engine Controls.
  8. Install the PCV tube to the air cleaner outlet duct.
  9. Connect the negative battery cable. Refer to Battery Cable Replacement in Engine Electrical.