2006 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE

Body Control Module (BCM) C1

Fig 1: Body Control Module (BCM) C1 Connector End Views
GM1567229Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) C1 Connector Parts Information

Connector Part Information 
  • OEM: 15480437
  • Service: See Catalog
  • Description: 56-Way F Micro 64/GT 280 Series (BK)
Terminal Part Information 
  • Pins:
  • Terminal:
  • Core/Insulation Crimp:
  • Release Tool/Test Probe:
Body Control Module (BCM) C1 Terminal Identification

Pin Wire Color Circuit No. Function
A1 - - Not Used
A2 YE 317 Fog Lamp Relay Control
A3 L-BU 14 Left Turn Signal Lamp Supply Voltage
A4 GY/BK 690 Courtesy Lamp Supply Voltage (TR9)
A5 PK/WH 1970 Headlamp Relay Control
A6 BK 755 RAP Relay Coil Control
A7 OG 2040 Battery Positive Voltage
A8 D-GN 113 Windshield Wiper Switch Signal 2
A9 - - Not Used
A10 WH 193 Rear Defog Relay Control
A11 L-BU 244 Passenger Door Lock Switch Lock Control
A12 WH 194 Door Unlock Control
A13-A17 - - Not Used
A18 BK/WH 1969 Headlamp High Beam Relay Control
A19 D-BU 15 Right Turn Signal Lamps Supply Voltage
A20 YE 196 Windshield Wiper Motor Park Switch Signal
A21-A23 - - Not Used
A24 BN/WH 301 Park Lamp Relay Control
A25 - - Not Used
A26 RD/BK 1594 Ignition 3 Relay Control
A27-A28 - - Not Used
A29 OG 1732 Inadvertant Power Supply Voltage
A30 OG 1732 Inadvertant Power Supply Voltage
A31 L-BU 1134 Park Brake Switch Signal
A32 GY/BK 745 Left Front Door Ajar Switch Signal
A33-A36 - - Not Used
A37 L-BU 20 Stop Lamp Supply Voltage
A38 L-GN/BK 748 Right Front Door Ajar Switch Signal
A39 BK/WH 746 Left Rear Door Ajar Switch Signal
A40 BK 28 Horn Relay Control
A41 PU 1807 Class 2 Serial Data
A42 PU 1807 Class 2 Serial Data
A43 D-GN/WH 762 A/C Request Signal
A44 L-BU/BK 747 Right Rear Door Ajar Switch Signal
A45 - - Not Used
A46 WH 156 Courtesy Lamp Low Control
A47 PU 1807 Class 2 Serial Data
A48 BN 2509 Left Rear Park Lamps Supply Voltage
B1 YE 18 Left Rear Stop/Turn Lamp Supply Voltage
B2 D-GN 19 Right Rear Stop/Turn Lamp Supply Voltage
B3 BK/WH 1251 Ground
B4 RD 228 Windshield Washer Pump Control
B5 OG 840 Battery Positive Voltage
B6 D-BU 338 Run/Crank Voltage
B7 BN 4 Accessory Voltage
B8 OG 1340 Battery Positive Voltage
Factory Service Tools

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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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