2003 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE

ABS Connector End Views

Electronic Brake Control Module (EBCM) Connector End View

GM625474Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15336549
  • 37 Way F Micro-Pack 100 W Series (BLK)
Pin Wire Color Circuit No. Function
A RED 202 Battery Positive Voltage
A1-A2 - - Not Used
A3 BLK 884 Left Rear Wheel Speed Sensor Signal
A4 RED 885 Left Rear Wheel Speed Sensor Low Reference
A5 WHT 883 Right Rear Wheel Speed Sensor Low Reference
A6 BRN 882 Right Rear Wheel Speed Sensor Signal
A7 TAN 833 Right Front Wheel Speed Sensor Low Reference
A8 DK GRN 872 Right Front Wheel Speed Sensor Signal
A9 YEL 873 Left Front Wheel Speed Sensor Low Reference
A10 LT BLU 830 Left Front Wheel Speed Sensor Signal
A11 PNK 239 Ignition 1 Voltage
B RED 202 Battery Positive Voltage
B1-B6 - - Not Used
B7 LT BLU 1122 ABS/TCS Class 2 Serial Data
B8-B11 - - Not Used
C BLK 251 Ground
C1 TAN/BLK 464 Delivered Torque Signal
C2-C6 - - Not Used
C7 WHT 17 Stop Lamp Switch Signal
C8 - - Not Used
C9 ORN/BLK 463 Requested Torque Signal
C10 - - Not Used
C11 - - Vent Tube
D BLK 251 Ground
Traction Control Switch Connector End View

GM39660Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12047785
  • 4 Way F Metri-Pack 150 (BLK)
Pin Wire Color Circuit No. Function
A BLK/WHT 1251 Ground
B BLK 1050 Ground
B BLK 1550 Ground (Monte Carlo)
C GRY 8 Instrument Panel Lamp Supply Voltage - 1
D BRN/WHT 1571 Traction Control Switch Signal
Wheel Speed Sensor (WSS) - LF Connector End View

GM537107Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052644
  • 2 Way F Metri-Pack 150 Sealed (LT GRY)
Pin Wire Color Circuit No. Function
A LT BLU 830 Left Front Wheel Speed Sensor Signal
B YEL 873 Left Front Wheel Speed Sensor Low Reference
Wheel Speed Sensor (WSS) - LR Connector End View

GM287974Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15305168
  • 2-Way F Metri-Pack 150 Series Sealed (LT GRY)
Pin Wire Color Circuit No. Function
A BLK 884 Left Rear Wheel Speed Sensor Signal
B RED 885 Left Rear Wheel Speed Sensor Low Reference
Wheel Speed Sensor (WSS) - RF Connector End View

GM537107Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052644
  • 2 Way F Metri-Pack 150 Series Sealed (LT GRY)
Pin Wire Color Circuit No. Function
A DK GRN 872 Right Front Wheel Speed Sensor Signal
B TAN 833 Right Front Wheel Speed Sensor Low Reference
Wheel Speed Sensor (WSS) - RR Connector End View

GM287974Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15305168
  • 2-Way F Metri-Pack 150 Series Sealed (LT GRY)
Pin Wire Color Circuit No. Function
A BRN 882 Right Rear Wheel Speed Sensor Signal
B WHT 883 Right Rear Wheel Speed Sensor Low Reference
Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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