Diagnostic Aids

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.

Use scan tool to monitor FUEL LEVEL while raising vehicle from rear. Percentage should change indicating a moving float.

Fuel gauge should closely match FUEL LEVEL percentage reading on scan tool with ignition on, engine off, with zero vehicle speed.

Fuel level reading on scan tool is averaged over time.

Fuel level sensor resistance range should 19-251 ohms.

Possible causes of static fuel level:

Fuel sender float stuck or perforated.
Fuel float sender sweep arm stuck.