FUEL FILTER
REMOVAL
(1) Release fuel pressure, refer to the Fuel release
procedure in this section.
(2) Disconnect the negative battery cable.
(3) Raise vehicle and support.
(4) Support the fuel tank with a transmission jack.
(5) Remove fuel line from the front of the tank.
(6) Remove ground strap
(7) Remove the inboard side of the fuel tank straps
and front T strap fastner.
(8) Lower the tank about 6 inches (Fig. 1).
(9) Remove fuel lines from the fuel pump module.
(10) Remove fuel filter from tank.
INSTALLATION
(1) Install fuel filter to tank. Tighten bolt to 4.5
N´m (40 in. lbs.)
(2) Install fuel lines to the fuel pump module (Fig.
1).
(3) Raise tank into position.
(4) Install the fuel tank straps.Tighten bolt for
main straps to 54 N´m (40 ft. lbs.) and the T strap
bolt to 28.2 N´m (250 in. lbs.)
(5) Install the ground strap
(6) Connect the fuel line at the front of the tank.
(7) Lower vehicle.
(8) Connect the negative battery cable.
(9) Pressurize the fuel system with the DRBIIIt
and check for leaks.
FUEL LEVEL SENDING UNIT /
SENSOR
DESCRIPTION
The fuel gauge level sending unit is attached to the
side of fuel pump module. The level sensor is a vari-
able resistor.
OPERATION
Its resistance changes with the amount of fuel in
the tank. The float arm attached to the sensor moves
as the fuel level changes.
The fuel level input is used as an input for OBD II.
If the fuel level is below 15% or above 85% of total
tank capacity several monitors are disabled. There
are diagnostics for the level circuit open and shorted.
REMOVAL
Remove fuel pump module. Refer to Fuel Pump
Module in this section.
(1) Depress retaining tab and remove the fuel
pump/level sensor connector from theBOTTOMof
the fuel pump module electrical connector (Fig. 2) .
NOTE: The pump module harness on TOP of flange
is not serviceable or removable.
Fig. 1 FUEL FILTER
Fig. 2 Fuel Pump/Level Sensor Electrical Connector
1 - ELECTRICAL CONNECTOR
2 - RETAINING TAB
14 - 4 FUEL DELIVERYRS
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