GM Service Manual Online
For 1990-2009 cars only

Temperature Versus Resistance -- Engine Coolant Temperature Sensor

Temperature

°C/°F

Resistance Minimum

Ohms

Resistance Maximum

Ohms

Engine Coolant Temperature (ECT)

-40/-40

40490

50136

-20/-4

14096

16827

-10/14

8642

10152

0/32

5466

6326

20/68

2351

2649

25/77

1941

2173

40/104

1118

1231

60/140

573

618

80/176

313

332

100/212

182

191

120/248

109

116

140/284

068

074