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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Controls And Fuel - 2.0L (LSY) - Description And Operation) >> Description and Operation >> Fuel System Description >> Fuel Tank

Fuel Tank

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The fuel tank stores the fuel supply. The fuel tank is located in the rear of the vehicle. The fuel tank is held in place by 2 metal straps that attach to the frame. The fuel tank is molded from high-density polyethylene.

Models equipped with All-Wheel Drive have a fuel tank that is a saddle configuration in order to provide space for a driveshaft through the center area of the fuel tank. Because of the saddle shape of the tank, two fuel tank fuel pump modules are required. Non All-Wheel Drive models have a standard fuel tank and a single fuel pump module.

The fuel limit vent valve which is mounted inside the fuel tank, as part of the tank assembly is designed to close the fuel tank vent when the fuel level reaches a calibrated level during fueling. When the fuel limit vent valve is closed the tank pressure increases during the filling process. This increase in tank pressure causes the filling station fuel pump nozzle to turn OFF. When the fuel limit vent valve is opened fuel vapors in the fuel tank are allowed to vent through the fuel limit vent valve and hose to the EVAP canister.