GM Service Manual Online
For 1990-2009 cars only

Component Resistance Chart

Component

Wire Color/Circuit Number*

Pass-Thru Pin and Connector

Resistance at 20°C (68°F)

Resistance at 70°C (158°F)

1-2/3-4 Shift Solenoid (SS) Valve

Brown/PF 954(Power)

D, Main Case

17.5-18.5 ohms

21.0-21.1 ohms

Black/PM 748(Grd)

C, Main Case

2-3 Shift Solenoid (SS) Valve

Brown/PF 954 (Power)

D, Main Case

17.5-18.5 ohms

21.0-21.1 ohms

White/PB 743(Grd)

A, Main Case

Band Apply Solenoid Valve (PWM)

Brown/PF 954(Power)

D, Main Case

9.5-10.5 ohms

11.5-12.5 ohms

Blue/RF 754(Grd)

B, Main Case

Pressure Control (PC) Solenoid Valve

Blue/FY 740(Hi)

B, Adapter Case

3.5-4.6 ohms

4.2-5.5 ohms

Brown/RA 741(Low)

C, Adapter Case

Torque Convertor Clutch (TCC) Solenoid Valve

Black/PF 854(Power)

D, Adapter Case

17.5-18.5 ohms

21.0-21.1 ohms

White/FB 738(Grd)

A , Adapter Case

Automatic Transmission Output Shaft Speed (A/T OSS) Sensors

Blk-Yel/FB 703(Hi)

A, Speed Sensor

2,750-3,150 ohms

3,280-3,770 ohms

Blu-Grn/PU 705(Low)

B, Speed Sensor

Automatic Transmission Fluid Temperature (TFT) Sensor

Refer to Temperature Versus Resistance .

* All wire colors and circuit numbers are internal to the transmission except for the A/T OSS, which is external.