Fuel Tank: Notes
WARNING: This page is about a different car, the 2002 Saturn LW200, 2002 Saturn L200, and 2002 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.
The fuel tank is blow-molded of high-density polyethylene. This material is multi-layer in construction to enhance its ability to minimize leakage of fuel vapors to the atmosphere (impermeability). It is generally 4.0 mm to 5.0 mm (101.6 in. to 127 in.) in thickness and incorporates two valves which operate during the refueling process.
Both these valves are not serviceable, both are molded into fuel tank shell, Fill Limit Vent Valve (FLVV), and grade vent valve.