GM Service Manual Online
For 1990-2009 cars only

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 pressure. Refer to Fuel Pressure Relief Procedure .
  3. Raise the vehicle.
  4. Remove the fuel tank. Refer to Fuel Tank Replacement (Passenger/Cargo Van) or Fuel Tank Replacement (Commercial/RV Cutaway Van) .

  5. Object Number: 65287  Size: SH
  6. Remove the fuel tank vapor pressure sensor electrical connector.

  7. Object Number: 64998  Size: SH
  8. Remove the fuel tank pressure sensor (1) from the fuel modular sender (2).

Installation Procedure


    Object Number: 64998  Size: SH
  1. Install the fuel tank vapor pressure sensor (1) to the fuel modular sender (2).

  2. Object Number: 65287  Size: SH
  3. Install the fuel tank vapor pressure sensor electrical connector.
  4. Install the fuel tank. Refer to Fuel Tank Replacement (Passenger/Cargo Van) and Fuel Tank Replacement (Commercial/RV Cutaway Van) .
  5. Lower the vehicle.
  6. Connect the negative battery cable.