GM Service Manual Online
For 1990-2009 cars only
Table 1: Electronic Suspension Control (ESC) Module C1 (w/F45)
Table 2: Electronic Suspension Control (ESC) Module C2 (w/F45)
Table 3: Electronic Suspension Control (ESC) Module C1 (w/F55)
Table 4: Electronic Suspension Control (ESC) Module C2 (w/F55)
Table 5: Electronic Suspension Control (ESC) Module C3 (w/F55)
Table 6: Suspension Damper -- LF
Table 7: Suspension Damper -- LR
Table 8: Suspension Damper -- RF
Table 9: Suspension Damper -- RR
Table 10: Suspension Position Sensor -- LF
Table 11: Suspension Position Sensor -- LR
Table 12: Suspension Position Sensor -- RF
Table 13: Suspension Position Sensor -- RR

Electronic Suspension Control (ESC) Module C1 (w/F45)


Object Number: 73157  Size: CH

Connector Part Information

    • 12110207
    • 32-Way F Micro-Pack 100 Series (LT BLU)

Pin

Wire Color

Circuit No.

Function

C1

PPL

1017

Right Rear Damper Control

C2

YEL

1014

Right Rear Damper Low Reference

C3

RED/BLK

1013

Left Rear Damper Control

C4

RED

1010

Left Rear Damper Low Reference

C5

PPL

1490

Chassis Pitch Signal

C6

--

--

Not Used

C7

YEL/BLK

2085

PWM Serial Data

C8 - C10

--

--

Not Used

C11

BRN

1009

Right Front Damper Control

C12

WHT/BLK

1006

Right Front Damper Low Reference

C13

LT BLU/WHT

1112

Damping Relay Coil Control

C14

WHT

320

Automatic Level Control Exhaust Solenoid Control

C15

YEL

321

Automatic Level Control Relay Control

C16

--

--

Not Used

D1

DK BLU

1333

Damper Drive Relay

D2 - D3

--

--

Not Used

D4 - D5

PPL

1807

Class 2 Serial Data

D6 - D11

--

--

Not Used

D12

LT GRN

1005

Left Front Damper Control

D13

RED

1448

Left Front Damper Low Reference

D14

GRY

791

PWM Serial Data

D15

WHT

790

PWM Serial Data

D16

--

--

Not Used

Electronic Suspension Control (ESC) Module C2 (w/F45)


Object Number: 130690  Size: CH

Connector Part Information

    • 12110206
    • 24-Way F Micro-Pack 100 Series (LT BLU)

Pin

Wire Color

Circuit No.

Function

A1 - A2

--

--

Not Used

A3

RED/BLK

1208

Left Rear Suspension Position Sensor Voltage Reference

A4

LT GRN/WHT

1210

Left Rear Suspension Position Sensor Signal

A5

RED/BLK

1214

Right Rear Suspension Position Sensor Voltage Reference

A6

LT GRN/WHT

1216

Right Rear Suspension Position Sensor Signal

A7

--

--

Not Used

A8

PPL/WHT

1205

Left Front Suspension Position Sensor Voltage Reference

A9

TAN/WHT

1207

Left Front Suspension Position Sensor Signal

A10

PPL/WHT

1211

Right Front Suspension Position Sensor Voltage Reference

A11

TAN/WHT

1213

Right Front Suspension Position Sensor Signal

A12

BLK

1050

Ground

B1

ORN

2340

Battery Positive Voltage

B2

--

--

Not Used

B3

LT GRN/BLK

1209

Left Rear Suspension Position Sensor Low Reference

B4

--

--

Not Used

B5

LT GRN/BLK

1215

Right Rear Suspension Position Sensor Low Reference

B6 - B7

--

--

Not Used

B8

LT BLU/BLK

1206

Left Front Suspension Position Sensor Low Reference

B9

--

--

Not Used

B10

LT BLU/BLK

1212

Right Front Suspension Position Sensor Low Reference

B11

--

--

Not Used

B12

BRN

41

Ignition 3 Voltage

Electronic Suspension Control (ESC) Module C1 (w/F55)


Object Number: 39787  Size: CH

Connector Part Information

    • 12129025
    • 32-Way F Micro-Pack 100 Series (LT BLU)

Pin

Wire Color

Circuit No.

Function

1

RED/BLK

1448

Left Front Damper Control

2

--

--

Not Used

3

TAN/WHT

1207

Left Front Suspension Position Sensor Signal

4

PPL/WHT

1205

Left Front Suspension Position Sensor Voltage Reference

5 - 6

--

--

Not Used

7

WHT

790

PWM Serial Data

8 - 10

--

--

Not Used

11

YEL/BLK

2085

PWM Serial Data

12

YEL

321

Automatic Level Control Relay Control

13

TAN/WHT

1213

Right Front Suspension Position Sensor Signal

14

PPL/WHT

1211

Right Front Suspension Position Sensor Voltage Reference

15

--

--

Not Used

16

BRN

1009

Right Front Damper Low Reference

17

LT GRN

1005

Left Front Damper Low Reference

18

--

--

Not Used

19

LT BLU/BLK

1206

Left Front Suspension Position Sensor Low Reference

20 - 22

--

--

Not Used

23

GRY

791

PWM Serial Data

24 - 27

--

--

Not Used

28

WHT

320

Automatic Level Control Exhaust Solenoid Control

29

LT BLU/BLK

1212

Right Front Suspension Position Sensor Low Reference

30 - 31

--

--

Not Used

32

BLK/WHT

1006

Right Front Damper Control

Electronic Suspension Control (ESC) Module C2 (w/F55)


Object Number: 39784  Size: CH

Connector Part Information

    • 12129225
    • 24 Way F Micro-Pack 100 Series (LT BLU)

Pin

Wire Color

Circuit No.

Function

1

RED

1010

Left Rear Damper Control

2

--

--

Not Used

3

LT GRN/WHT

1210

Left Rear Suspension Position Sensor Signal

4

RED/BLK

1208

Left Rear Suspension Position Sensor Voltage Reference

5

--

--

Not Used

6

PPL

1807

Class 2 Serial Data

7- 8

--

--

Not Used

9

LT GRN/WHT

1216

Right Rear Suspension Position Sensor Signal

10

RED/BLK

1214

Right Rear Suspension Position Sensor Voltage Reference

11

--

--

Not Used

12

PPL

1017

Right Rear Damper Low Reference

13

RED/BLK

1013

Left Rear Damper Low Reference

14

--

--

Not Used

15

LT GRN/BLK

1209

Left Rear Suspension Position Sensor Low Reference

16 - 17

--

--

Not Used

18

PPL

1807

Class 2 Serial Data

19

--

--

Not Used

20

PPL

1490

Chassis Pitch Signal

21

LT GRN/BLK

1215

Right Rear Suspension Position Sensor Low Reference

22 - 23

--

--

Not Used

24

YEL

1014

Right Rear Damper Control

Electronic Suspension Control (ESC) Module C3 (w/F55)


Object Number: 832586  Size: CH

Connector Part Information

    • 12146740
    • 5-Way F Metri-Pack 280 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

ORN

2340

Battery Positive Voltage

C

BRN

41

Ignition 3 Voltage

D

BLK

1050

Ground

E

--

--

Not Used

Suspension Damper -- LF


Object Number: 537107  Size: CH

Connector Part Information

    • 12052638
    • 2-Way F Metri-Pack 150 Series Sealed (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

1448

Left Front Damper Control

B

LT GRN

1005

Left Front Damper Low Reference

Suspension Damper -- LR


Object Number: 537107  Size: CH

Connector Part Information

    • 12052638
    • 2-Way F Metri-Pack 150 Series Sealed (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

1010

Left Rear Damper Control

B

RED/BLK

1013

Left Rear Damper Low Reference

Suspension Damper -- RF


Object Number: 537107  Size: CH

Connector Part Information

    • 12052638
    • 2-Way F Metri-Pack 150 Series Sealed (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

WHT/BLK

1006

Right Front Damper Control

B

BRN

1009

Right Front Damper Low Reference

Suspension Damper -- RR


Object Number: 537107  Size: CH

Connector Part Information

    • 12052638
    • 2-Way F Metri-Pack 150 Series Sealed (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

YEL

1014

Right Rear Damper Control

B

PPL

1017

Right Rear Damper Low Reference

Suspension Position Sensor -- LF


Object Number: 684807  Size: CH

Connector Part Information

    • 12110294
    • 3-Way F Metric-Pack 150 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

1205

Left Front Suspension Position Sensor Voltage Reference

B

TAN/WHT

1207

Left Front Suspension Position Sensor Signal

C

LT BLU/BLK

1206

Left Front Suspension Position Sensor Low Reference

Suspension Position Sensor -- LR


Object Number: 684807  Size: CH

Connector Part Information

    • 12110294
    • 3-Way F Metric-Pack 150 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED/BLK

1208

Left Rear Suspension Position Sensor Voltage Reference

B

LT GRN/WHT

1210

Left Rear Suspension Position Sensor Signal

C

LT GRN/BLK

1209

Left Rear Suspension Position Sensor Low Reference

Suspension Position Sensor -- RF


Object Number: 684807  Size: CH

Connector Part Information

    • 12110294
    • 3-Way F Metri-Pack 150 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

1211

Right Front Suspension Position Sensor Voltage Reference

B

TAN/WHT

1213

Right Front Suspension Position Sensor Signal

C

LT BLU/BLK

1212

Right Front Suspension Position Sensor Low Reference

Suspension Position Sensor -- RR


Object Number: 684807  Size: CH

Connector Part Information

    • 12110294
    • 3-Way F Metri-Pack 150 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED/BLK

1214

Right Rear Suspension Position Sensor Voltage Reference

B

LT GRN/WHT

1216

Right Rear Suspension Position Sensor Signal

C

LT GRN/BLK

1215

Right Rear Suspension Position Sensor Low Reference