GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Sonoma Pickup - 2WD 🢒 Engine 🢒 Engine Electrical 🢒 Fuel Hose/Pipes Replacement - Engine Compartment

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. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  3. Clean all the engine compartment connecting fuel pipe connections and the surrounding areas before disconnecting in order to avoid possible contamination of the fuel system.

    4. Object Number: 638614 Size: SH
  4. Disconnect the engine compartment fuel feed pipe at the fuel rail pipe (2).

    5. Object Number: 639077 Size: SH
  5. Disconnect the engine compartment fuel feed pipe at the fuel composition sensor (1). Refer to Metal Collar Quick Connect Fitting Service .
  6. Cap the fuel pipes in order to prevent possible fuel system contamination.

Installation Procedure

    Object Number: 639077 Size: SH
  1. Remove the caps from the fuel pipes.
  2. Connect the engine compartment fuel feed pipe to the fuel composition sensor (1). Refer to Metal Collar Quick Connect Fitting Service .

    3. Object Number: 638614 Size: SH
  3. Connect the engine compartment fuel feed pipe to the fuel rail pipe (2).
  4. Tighten the fuel filler cap.
  5. Connect the negative battery cable.
  6. Inspect for leaks.
    7. 6.1. Turn ON the ignition for 2 seconds.
    6.2. Turn OFF the ignition for 10 seconds.
    6.3. Turn ON the ignition.
    6.4. Inspect for fuel leaks.