Fuel Tank And Lines - TDV6 3.0L Diesel/TDV6 3.0L Diesel - Gen 1.5/TDV6 3.0L Diesel - Gen 2 (G1950043): Overview

WARNING: This page is about a different variant/trim than selected.

The fuel delivery system incorporates a low and high pressure circuits to provide the engine with sufficient fuel for all operating conditions.

The low pressure system features the following components:

Molded plastic saddle type fuel tank

Fuel pump module (with integral in-tank pump)

2 fuel level sensors

Fuel delivery and return lines

Fuel filter assembly

The Low Pressure (LP) fuel pump is located in the bottom of the fuel tank assembly. The LP fuel pump has a Direct Current (DC) electric motor and is operated by the LP fuel pump relay. The Body Control Module/Gateway Module (BCM/GWM) controls the LP fuel pump relay. The LP fuel pump draws fuel from the fuel tank and delivers it to the High Pressure (HP) fuel pump. The HP fuel pump is mounted on the engine.

The LP fuel pump also supplies fuel to the 2 jet pumps on either side of the fuel tank. This makes sure there is sufficient fuel in the swirl pot.

The HP system features a Bosch 'common rail' high pressure system.

On vehicles in cold climate markets, a modified fuel pump module is installed on vehicles equipped with a Fuel Fired Booster Heater (FFBH). A FFBH fuel pump is mounted on the right of the fuel tank. A separate fuel line draws fuel from the fuel pump module to the FFBH fuel pump. An additional fuel line delivers the fuel to the FFBH in the engine compartment.