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Two different procedures may be used to drain fuel tank (lowering tank or using DRBIII(R) scan tool). The quickest draining procedure involves lowering the fuel tank. WARNING: RELEASE FUEL SYSTEM PRESSURE BEFORE SERVICING FUEL SYSTEM COMPONENTS. SERVICE VEHICLES IN WELL VENTILATED AREAS AND AVOID IGNITION SOURCES. NEVER SMOKE WHILE SERVICING THE VEHICLE. THIS MAY RESULT IN PERSONAL INJURY OR DEATH. As an alternative procedure, the electric fuel pump may be activated allowing tank to be drained at fuel rail connection. Refer to DRBIII(R) scan tool for fuel pump activation procedures. Before disconnecting fuel line at fuel rail, release fuel pressure. Refer to the Fuel System Pressure Release Procedure. Disconnect the fuel line at the fuel rail and remove the plastic retainer from the fuel rail. Take plastic retainer and install it back into the fuel line from body. Check the O-ring and make sure that it is in place and not damaged. Attach end of special test hose tool number 6539 at fuel line connection from the body line. Position opposite end of this hose tool to an approved gasoline draining station. Activate fuel pump and drain tank until empty. When done remove the special test hose tool number 6539 from the body line. Remove the plastic retainer from the special test hose tool number 6539 and reinstall it into the fuel line from the body. Check the O-ring and make sure that it is in place and not damaged. Install the fuel line to the fuel rail. If electric fuel pump is not operating, tank must be lowered for fuel draining. Refer to following procedures.
Here's the fuel tank removal procedure:
FUEL PUMP MODULE REMOVAL