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 are approximate values base on information obtained from properly operating vehicles. Actual results may vary slightly.

Fuel Gage Display

Resistance (ohms)

Fuel Level (%)

Fuel Remaining

17.5 Gallon Tank (LX5 Engine)

E

40-68

0-10

0-7.1 L (0-1.9 gal)

1/4

124

32

21.4 L (5.7 gal)

1/2

163

53

35.7 L ( 9.4 gal)

3/4

200

73

48.4 L (12.8 gal)

F

230

90

61-66.2 L (16.1-17.5 gal)

Low Fuel Indicator On

98

19

11 L (2.9 gal)

18.5 Gallon Tank (L47 Engine)

E

40-72

0-10

0-7.6 L (0-2 gal)

1/4

128

32

22.7 L (6 gal)

1/2

168

54

37.8 L ( 10 gal)

3/4

206

75

53 L (14 gal)

F

235-250

92-100

64.3-70 L (17-18.5 gal)

Low Fuel Indicator On

94

16

11.3 L (3 gal)