GM Service Manual Online
For 1990-2009 cars only
Connector 1: Brake Booster Vacuum Sensor (LAT)
Connector 2: Brake Fluid Pressure Sensor (LAT)
Connector 3: Brake Fluid Pressure Sensor (FX3)
Connector 4: Electronic Brake Control Module (EBCM) (LAT/LY7)
Connector 5: Electronic Brake Control Module (EBCM) (LZ4)
Connector 6: Steering Wheel Position Sensor (FX3)
Connector 7: Traction Control Switch
Connector 8: Wheel Speed Sensor (WSS) - Left Front
Connector 9: Wheel Speed Sensor (WSS) - Left Rear
Connector 10: Wheel Speed Sensor (WSS) - Right Front
Connector 11: Wheel Speed Sensor (WSS) - Right Rear
Connector 12: Yaw Rate and Lateral Acceleration Sensor (LAT/LY7)

Brake Booster Vacuum Sensor (LAT)


Object Number: 1468512  Size: CH

Connector Part Information

  • OEM: 15448870
  • Service: 88988602
  • Description: 3-Way F GT 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 7116-4102-08/9
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)

Brake Booster Vacuum Sensor (LAT)

Pin

Wire Color

Circuit No.

Function

1

D-BU

1809

Brake Booster Vacuum Pressure Sensor Signal

2

L-GN/BK

6258

Low Reference

3

L-GN

6257

5-Volt Reference

Brake Fluid Pressure Sensor (LAT)


Object Number: 1519475  Size: CH

Connector Part Information

  • OEM: 15477863
  • Service: 88988301
  • Description: 3-Way F GT 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Brake Fluid Pressure Sensor (LAT)

Pin

Wire Color

Circuit No.

Function

1

TN/BK

6033

Low Reference

2

GY

6034

5-Volt Reference

3

YE

2034

Master Cylinder ABS Pressure Sensor Signal

Brake Fluid Pressure Sensor (FX3)


Object Number: 1243672  Size: CH

Connector Part Information

  • OEM: 15324236
  • Service: 15306334
  • Description: 3-Way F 0.64 MQS Series Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Brake Fluid Pressure Sensor (FX3)

Pin

Wire Color

Circuit No.

Function

1

OG/BK

645

Low Reference

2

PU

5002

Brake Fluid Pressure Sensor Signal

3

GY

596

5-Volt Reference

Electronic Brake Control Module (EBCM) (LAT/LY7)


Object Number: 1283867  Size: CH

Connector Part Information

  • OEM: 13552037
  • Service: See Catalog
  • Description: 50-Way F Mixed Series Sealed (BK)

Terminal Part Information

  • Pins: A-B
  • Terminal/Tray: 15305232/23
  • Core/Insulation Crimp: B/3
  • Release Tool/Test Probe: J-38125-11A/J-35616-42 (RD)
  • Pins: C
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: E-F
  • Terminal/Tray: 15392777/23
  • Core/Insulation Crimp: B/5
  • Release Tool/Test Probe: J-38125-553/J-35616-4A (PU)
  • Pins: A1-A8, B9-B14, C8-C10, C12-C13
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Electronic Brake Control Module (EBCM) (LAT/LY7)

Pin

Wire Color

Circuit No.

Function

A

RD/BK

542

Battery Positive Voltage

B

RD/BK

542

Battery Positive Voltage

C

PK

139

Ignition 1 Voltage

D

--

--

Not Used

E

BK

350

Ground

F

BK

350

Ground

G-H

--

--

Not Used

A1

L-BU

830

Left Front Wheel Speed Sensor Signal

A2

YE

873

Left Front Wheel Speed Sensor Signal

A3

D-GN

872

Right Front Wheel Speed Sensor Supply Voltage

A4

TN

833

Right Front Wheel Speed Sensor Low Reference

A5

TN

884

Left Rear Wheel Speed Sensor Supply Voltage

A6

OG

885

Left Rear Wheel Speed Sensor Signal

A7

BN

882

Right Rear Wheel Speed Sensor Supply Voltage

A8

WH

883

Right Rear Wheel Speed Sensor Signal

A9-A14

--

--

Not Used

B1-B8

--

--

Not Used

B9

TN

2501

High Speed GMLAN Serial Data Bus-

B10

TN

2501

High Speed GMLAN Serial Data Bus-

B11

TN/BK

2500

High Speed GMLAN Serial Data Bus+

B12

TN/BK

2500

High Speed GMLAN Serial Data Bus+

B13

PU

719

Low Reference

B14

GY

1337

5-Volt Reference

C1-C2

--

--

Not Used

C3

OG/BK

556

Steering Wheel Position Sensor Signal 2 (w/o HP7)

C4-C5

--

--

Not Used

C6

L-BU

1764

Steering Wheel Position Sensor Signal B (w/o HP7)

C7

L-GN

1763

Steering Wheel Position Sensor Signal A (w/o HP7)

C8

D-BU

716

Yaw Rate Sensor Signal

C9

L-BU

715

Lateral Accelerometer Signal

C10

PU

5002

Brake Fluid Pressure Sensor Signal

C12

OG/BK

645

Low Reference

C13

GY

596

5-Volt Reference

C14

GY

1056

Steering Wheel Position Sensor 5V Reference Voltage (w/o HP7)

Electronic Brake Control Module (EBCM) (LZ4)


Object Number: 1283867  Size: CH

Connector Part Information

  • OEM: 15405449
  • Service: 88988318
  • Description: 50-Way F Mixed Series Sealed (BK)

Terminal Part Information

  • Pins: A-B
  • Terminal/Tray: 15305232/23
  • Core/Insulation Crimp: B/3
  • Release Tool/Test Probe: J-38125-11A/J-35616-42 (RD)
  • Pins: C
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: E-F
  • Terminal/Tray: 15392777/23
  • Core/Insulation Crimp: B/5
  • Release Tool/Test Probe: J-38125-553/J-35616-4A (PU)
  • Pins: A1-A8, B9-B12
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Electronic Brake Control Module (EBCM) (LZ4)

Pin

Wire Color

Circuit No.

Function

A

RD/BK

542

Battery Positive Voltage

B

RD/BK

542

Battery Positive Voltage

C

PK

139

Ignition 1 Voltage

D

--

--

Not Used

E

BK

350

Ground

F

BK

350

Ground

G-H

--

--

Not Used

A1

L-BU

830

Left Front Wheel Speed Sensor Signal

A2

YE

873

Left Front Wheel Speed Sensor Signal

A3

D-GN

872

Right Front Wheel Speed Sensor Supply Voltage

A4

TN

833

Right Front Wheel Speed Sensor Low Reference

A5

TN

884

Left Rear Wheel Speed Sensor Supply Voltage

A6

OG

885

Left Rear Wheel Speed Sensor Signal

A7

BN

882

Right Rear Wheel Speed Sensor Supply Voltage

A8

WH

883

Right Rear Wheel Speed Sensor Signal

A9-A14

--

--

Not Used

B1-B8

--

--

Not Used

B9

TN

2501

High Speed GMLAN Serial Data Bus-

B10

TN

2501

High Speed GMLAN Serial Data Bus-

B11

TN/BK

2500

High Speed GMLAN Serial Data Bus+

B12

TN/BK

2500

High Speed GMLAN Serial Data Bus+

B13-B14

--

--

Not Used

C1-C14

--

--

Not Used

Steering Wheel Position Sensor (FX3)


Object Number: 40427  Size: CH

Connector Part Information

  • OEM: 12064978
  • Service: 12125678
  • Description: 6-Way F Micro-Pack 100 Series (GY)

Terminal Part Information

  • Pins: 1-2, 5-6
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Steering Wheel Position Sensor (FX3)

Pin

Wire Color

Circuit No.

Function

1

GY

1056

Steering Wheel Position Sensor 5V Reference Voltage

2

OG/BK

556

Steering Wheel Position Sensor Signal 2

3-4

--

--

Not Used

5

L-GN

1763

Steering Wheel Position Signal A

6

L-BU

1764

Steering Wheel Position Signal B

Traction Control Switch


Object Number: 39660  Size: CH

Connector Part Information

  • OEM: 12047785
  • Service: 12102900
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Pins: A, C-D
  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Traction Control Switch

Pin

Wire Color

Circuit No.

Function

A

BK

1050

Ground

B

--

--

Not Used

C

BN/WH

1571

Traction Control Switch Signal

D

GY

8

Instrument Panel Lamp Supply Voltage

Wheel Speed Sensor (WSS) - Left Front


Object Number: 537107  Size: CH

Connector Part Information

  • OEM: 12052644
  • Service: See Catalog
  • Description: 2-Way F Metri-Pack 150 Series Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Wheel Speed Sensor (WSS) - Left Front

Pin

Wire Color

Circuit No.

Function

A

L-BU

830

Left Front Wheel Speed Sensor Signal

B

YE

873

Left Front Wheel Speed Sensor Signal

Wheel Speed Sensor (WSS) - Left Rear


Object Number: 537107  Size: CH

Connector Part Information

  • OEM: 12052644
  • Service: See Catalog
  • Description: 2-Way F Metri-Pack 150 Series Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Wheel Speed Sensor (WSS) - Left Rear

Pin

Wire Color

Circuit No.

Function

A

TN

884

Left Rear Wheel Speed Sensor Supply Voltage

B

OG

885

Left Rear Wheel Speed Sensor Signal

Wheel Speed Sensor (WSS) - Right Front


Object Number: 537107  Size: CH

Connector Part Information

  • OEM: 12052644
  • Service: See Catalog
  • Description: 2-Way F Metri-Pack 150 Series Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Wheel Speed Sensor (WSS) - Right Front

Pin

Wire Color

Circuit No.

Function

A

L-BU

830

Left Front Wheel Speed Sensor Signal

B

YE

873

Left Front Wheel Speed Sensor Signal

Wheel Speed Sensor (WSS) - Right Rear


Object Number: 537107  Size: CH

Connector Part Information

  • OEM: 12052644
  • Service: See Catalog
  • Description: 2-Way F Metri-Pack 150 Series Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Wheel Speed Sensor (WSS) - Right Rear

Pin

Wire Color

Circuit No.

Function

A

BN

882

Right Rear Wheel Speed Sensor Supply Voltage

B

WH

883

Right Rear Wheel Speed Sensor Signal

Yaw Rate and Lateral Acceleration Sensor (LAT/LY7)


Object Number: 647974  Size: CH

Connector Part Information

  • OEM: 15326822
  • Service: 88987186
  • Description: 5-Way F GT 150 Series Sealed 4.0 (BK)

Terminal Part Information

  • Pins: B-E
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Yaw Rate and Lateral Acceleration Sensor (LAT/LY7)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

GY/BK

1337

5-Volt Reference

C

D-BU

716

Yaw Rate Sensor Signal

D

PU

719

Low Reference

E

L-BU

715

Lateral Accelerometer Signal