Tools Required

J 45878 Combustible Gas Detector

Important: If the fill valve is being replaced due to a leaking condition inspect the fill line union check valve for proper operation.

1. Relieve the CNG fuel system pressure. Refer to Fuel Pressure Relief .

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.

2. Disconnect the negative battery cable.
3. Remove the trunk trim panel.
4. Remove the cargo net, the cargo net knobs and the left wheelhouse carpet.
5. Loosen the fill valve boot clamp and peel back the boot.



6. Disconnect the fill line (3) at the fill valve (5).
7. Remove the fill valve retaining nut (1).



8. Remove the fill valve from the fill door assembly.

1. Install the fill valve through the fill door assembly.

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.

2. Loosely install the mounting nut.



3. Tighten the fill valve retaining nut (1) while holding the fill valve with a wrench (4).

Tighten
Tighten the fill valve retaining nut to 41 N·m (30 lb ft).

4. Connect the fill line (3) to the fill valve (5) with a new O-ring face seal. Lubricate the O-ring with petroleum jelly or the equivalent.

Tighten
Tighten the fill line fitting to 37 N·m (27 lb ft).

5. Connect the negative battery cable.

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

6. Connect the HPL power electrical connector.
7. Start the engine. Inspect for CNG fuel leaks at each serviced fitting using the J 45878 .



8. Slip the boot over the fill valve fitting.

Tighten
Tighten the fill valve boot clamp to 2 N·m (18 lb in).

9. Install the left carpet and the cargo net.
10. Install the trunk trim panel.