GM Service Manual Online
For 1990-2009 cars only

Component

Pass Thru Pins

Resistance at 20°C

Resistance at 100°C

Resistance to Ground (Case)

1-2 Shift Solenoid Valve

A, E

19-24 ohms

24-31 ohms

Greater than 250 K ohms

2-3 Shift Solenoid Valve

B, E

19-24 ohms

24-31 ohms

Greater than 250 K ohms

TCC PWM Solenoid Valve

S, E

10-11 ohms

13-15 ohms

Greater than 250 K ohms

Pressure Control Solenoid Valve

C, D

3-5 ohms

4-7 ohms

Greater than 250 K ohms

*Transmission Fluid Temperature (TFT) Sensor

M, L

3088-3942 ohms

159.3-198.0 ohms

Greater than 10 M ohms

Vehicle Speed Sensor (AT ISS/AT OSS)

A, B

1420 ohms @ 25°C

2140 ohms @ 150°C

Greater than 10 M ohms

*The resistance of this device is necessarily temperature dependent and will therefore vary far more than any other device. Refer to Transmission Fluid Temperature Sensor Specifications .