GM Service Manual Online
For 1990-2009 cars only

Transmission Control Module Connector


Object Number: 821223  Size: CH

Connector Part Information

Conn 42F Module 1 Socket Housing

Pin

Wire Color

Circuit No.

Function

1

YE

400

OSS High Signal

2

PU

401

OSS Low Signal

3

OG/BK

1228

PC Solenoid Valve High Control (HSD1)

4

BN

418

TCC PWM Solenoid Valve Control

5

YE

343

Accessory Voltage

6

BK/WH

751

Ground

7

--

--

Not Used

8

OG

1525

Solenoid Power Supply (HSD2)

9

PK

239

Ignition Voltage

10

OG/BK

1230

ISS High Signal

11

D-BU

/WH

1231

ISS Low Signal

12-14

--

--

Not Used

15

YE/BK

1227

TFT Sensor Signal

16-17

--

--

Not Used

18

YE/BK

1223

2-3 Shift Solenoid Valve Control

19

PU

898

4-5 Shift Solenoid Valve Control

20

WH

2500

High Speed GMLAN Serial Data Bus (+)

21

L-GN

2501

High Speed GMLAN Serial Data Bus (-)

22-23

--

--

Not Used

24

YE

772

Transmission Range Switch Signal B

25

GY

773

Transmission Range Switch Signal C

26

TN

2762

TFT Sensor Low Reference

27

RD/WH

1440

Battery Positive Voltage

28

--

--

Not Used

29

L-BU

/WH

1229

PC Solenoid Valve Low Control

30

L-GN

1222

1-2 Shift Solenoid Valve Control

31

--

--

Not Used

32

WH

2500

High Speed GMLAN Serial Data Bus + (CAN)

33

GN

2501

High Speed GMLAN Serial Data Bus - (CAN)

34-35

--

--

Not Used

36

TN/WH

771

Transmission Range Switch Signal A

37

WH

776

Transmission Range Switch Signal P

38

OG

5371

BAS Relay Coil Supply Voltage

39-42

--

--

Not Used