Procedures

DRAINING FUEL TANK

Special Tools:






NOTE: Two different procedures may be used to drain fuel tank: using a diagnostic scan tool to activate the fuel pump relay and drain the fuel tank, or remove the fuel pump. Due to a one-way check valve installed into the fuel fill opening fitting at the tank, the tank cannot be drained conventionally at the fill cap.

Conventional Procedure

1. Disconnect the fuel supply line quick-connect fitting at the fuel filter Service and Repair.
2. Install the appropriate Fuel Line Adapters / Fitting from the (8978A). Route the opposite end of this hose to an diesel fuel draining station. Using a scan tool, activate the fuel pump and drain the tank until empty.

Alternative Procedure

NOTE: If electric fuel pump is not operating, fuel must be drained through fuel fill fitting at tank. Refer to following procedures.

1. Disconnect the negative battery cable.
2. Remove the fuel pump module Fuel Tank - Removal.
3. After the fuel pump module has been removed, drain fuel tank into an approved diesel fuel draining station.