GM Service Manual Online
For 1990-2009 cars only

The information in this table is intended for use with the J 33431-C Signal Generator and Instrument Panel Tester. The fuel level sensor values represent the test values to be used on the Signal Generator to drive the fuel gage display to the indicated positions. Vehicles that require more than one fuel level sensor calculate gage position from many possible resistance combinations of fuel levels between the two tanks. Therefore, the values in the table may not correlate directly to readings taken from the vehicle primary or secondary sending units.

The values in the table are approximate values based on information obtained from properly operating vehicles. Actual results may vary slightly.

Fuel Gage Display

Resistance

Fuel Remaining

E

40-45 ohms

0-7 L (0-2 gal)

1/4

85 ohms

22 L (6 gal)

1/2

125 ohms

41 L (11 gal)

3/4

156 ohms

52 L (14 gal)

F

194-220 ohms

65-76 L (17-20 gal)

Fuel Level Low Indicator On

55 ohms

11 L (3 gal)

Fuel Level Low Indicator Off

60 ohms

12 L (3 gal)