GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD (CNG) 🢒 Engine 🢒 Engine Controls - 5.0L and 5.7L 🢒 Fuel Hoses/Pipes Replacement - Low Pressure Regulator to Gas Mass Sensor/Mixture Control Valve

Removal Procedure

    Object Number: 327077 Size: SH

    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 four screws from the gas mass sensor (GMS) inlet elbow (1).
  3. Loosen the fuel hose clamps (2).
  4. Remove the fuel hose with the clamps and the GMS inlet elbow.

Installation Procedure

    Object Number: 327077 Size: SH

    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.

  1. Install the fuel hose with the clamps (2) and the GMS inlet elbow .

    2. Tighten
    Tighten the clamps to 2 N·m (18 lb in).

  2. Install the 4 screws to the GMS inlet elbow (1).

    3. Tighten
    Tighten the screws to 5.4 N·m (48 lb in).

  3. Connect the negative battery cable.

    4. Tighten
    Tighten the bolt to 15 N·m (11 lb ft).