GM Service Manual Online
For 1990-2009 cars only

Component Resistance

Connector Pins

Resistance

20°C (68°F)

Resistance to Ground (Case)

Automatic Transmission Input (Shaft) Speed Sensor

2, 3

1,000-2,000 ohms

Greater than 50 K ohms

Automatic Transmission Output (Shaft) Speed Sensor

4, 5

1,000-2,000 ohms

Greater than 50 K ohms

Ratio Control Motor Coil - PWR to Either Coil

19 to 10, 17, 18, or 20

20-30 ohms

Greater than 50 K ohms

Ratio Control Motor Coil - Coil to Coil

10, 17, 18, 20

40-60 ohms

Greater than 50 K ohms

Transmission Fluid Pressure Sensor PWR to Signal

11, 12

Greater than 1 M ohms

Greater than 50 K ohms

Transmission Fluid Pressure Sensor PWR to GRD

1, 11

Greater than 1 M ohms

Greater than 50 K ohms

Transmission Fluid Pressure Sensor Signal to GRD

1, 12

6,000-10,000 ohms

Greater than 50 K ohms

Line Pressure Control Solenoid Valve

15, 16

3.3-4.3 ohms

Greater than 500 K ohms

Torque Converter Clutch (TCC) Enable Solenoid Valve

8, 9

18-22 ohms

Greater than 500 K ohms

Torque Converter Clutch (TCC) Pressure Control Solenoid Valve

6, 7

3.3-4.3 ohms

Greater than 500 K ohms

*Transmission Fluid Temperature (TFT) Sensor

13, 14

3,164-3,867 ohms

Greater than 500 K ohms

* Important: The resistance of this device is necessarily dependent on the temperature. Therefore the resistance will vary far more than any other device.