2003 Hummer H2FACTORY OEM SERVICE PROCEDURE

Body Control System Connector End Views

Body Control Module (BCM) Connector End View - C1

GM40446Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12177194
  • 6-Way F Metri-Pack 150 Series (NAT)
Pin Wire Color Circuit No. Function
A RED 2353 Instrument Panel Lamps Dimming Supply Voltage
B PPL/WHT 1382 LED Dimming Supply
C ORN 4040 Battery Positive Voltage
D ORN 1732 Inadvertent Power Courtesy Lamps Supply Voltage
E BRN/WHT 230 Instrument Panel Lamps Dimming Control
F ORN 2240 Battery Positive Voltage
Body Control Module (BCM) Connector End View - C2

GM73156Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110088
  • 24-Way F Micro-Pack 100 Series (GRY)
Pin Wire Color Circuit No. Function
A1 - - Not Used
A2 DK BLU 1796 Steering Wheel Radio Controls Supply Voltage
A3 TAN/BLK 254 Rear Door Unlock Relay Control
A4 PNK/WHT 1970 Headlamp Low Beam Relay Control
A5 - - Not Used
A6 GRY/BLK 255 Rear Door Lock Relay Control
A7 - - Not Used
A8 WHT 193 Rear Defog Relay Control
A9-A10 - - Not Used
A11 RED/WHT 812 12 Volt Reference
A12 ORN 1140 Battery Positive Voltage
B1 BLK/WHT 1969 Headlamp High Beam Relay Control
B2 WHT 1080 Park Lamp Relay Control
B3 DK BLU 1353 RAP Supply Voltage
B4 LT GRN/BLK 592 DRL Relay Control
B5 PPL 359 DRL Off Indicator Control
B6 BLK/WHT 1851 Ground
B7 BLK 1835 Security System Sensor Low Reference
B8 PNK 1348 Headlamp On Indicator Control
B9 BLK 28 Horn Relay Control
B10 - - Not Used
B11 GRY 1056 Dimmer Switch 5V Reference Voltage
B12 LT GRN 1037 BCM Class 2 Serial Data
Body Control Module (BCM) Connector End View - C3

GM255037Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12160778
  • 24-Way F Micro-Pack 100 Series (BRN)
Pin Wire Color Circuit No. Function
A1-A3 - - Not Used
A4 WHT 278 Ambient Light Sensor Signal
A5 GRY 1548 Passenger Sunload Sensor Signal
A6 YEL 1836 Security System Sensor Signal
A7 LT GRN 1011 Remote Radio Control Signal
A8 DK GRN 588 DRL Switch Signal
A9 - - Not Used
A10 DK GRN 113 Windshield Wiper Switch Signal 2
A11 PPL 328 Interior Lamp Defeat Switch Signal
A12 - - Not Used
B1 YEL 710 Class 2 Serial Data
B2 GRY/BLK 308 Park Lamp Switch Signal
B3-B4 - - Not Used
B5 LT BLU/BLK 590 Driver Sunload Sensor Signal
B6 BLK/WHT 1851 Ground
B7 - - Not Used
B8 ORN/BLK 2090 Dimming Switch Signal
B9 LT GRN 11 Headlamp Dimmer Switch Signal
B10 - - Not Used
B11 LT BLU 553 Tow/Haul Switch Signal
B12 - - Not Used
Body Control Module (BCM) Connector End View - C4

GM130690Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110206
  • 24-Way F Micro-Pack 100 Series (LT BLU)
Pin Wire Color Circuit No. Function
A1 LT GRN 80 Key In Ignition Switch Signal
A2 YEL 307 Headlamp Switch Flash to Pass Signal
A3 WHT 530 Off/Run/Crank Voltage
A4 PNK 39 Ignition 1 Voltage
A5-A6 - - Not Used
A7 LT BLU 1134 Park Brake Switch Signal
A8 GRY 1524 Backup Lamp Signal
A9-A11 - - Not Used
A12 WHT 103 Headlamp Switch Headlamps On Signal
B1-B2 - - Not Used
B3 YEL 43 Accessory Voltage
B4-B5 - - Not Used
B6 GRY/BLK 2226 Instrument Panel Lamps Dimmer Switch Low Reference
B7 BLK 279 Ambient Light Sensor Low Reference
B8 - - Not Used
B9 DK BLU/WHT 1495 Courtesy Lamps On Signal
B10-B12 - - Not Used
Body Control Module (BCM) Connector End View - C5

GM304345Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12177195
  • 6-Way F Metri-Pack 150 Series (BLK)
Pin Wire Color Circuit No. Function
A-C - - Not Used
D ORN 2140 Battery Positive Voltage
E GRY/BLK 690 Courtesy Lamp Control
F LT GRN 24 Backup Lamp Supply Voltage
Body Control Module (BCM) Connector End View - C6

GM362758Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12191375
  • 16-Way F Micro-Pack 100 Series (PPL)
Pin Wire Color Circuit No. Function
A1 PNK/BLK 1303 Liftgate Ajar Switch Signal
A2 LT GRN/BLK 748 Right Rear Door Ajar Switch Signal
A3 LT BLU/BLK 747 Left Rear Door Ajar Switch Signal
A4 - - Not Used
A5 LT BLU 2265 Power Window Lockout Left Rear Control
A6 LT GRN 2266 Power Window Lockout Right Rear Control
A7 GRY/BLK 1186 Power Window Relay Right Rear Up Control
A8 DK GRN 1188 Power Window Relay Right Rear Down Control
B1 - - Not Used
B2 WHT 194 Rear Door Unlock Switch Signal
B3 LT BLU 195 Rear Door Lock Switch Signal
B4-B6 - - Not Used
B7 YEL 1187 Power Window Relay Left Rear Down Control
B8 WHT 1185 Power Window Relay Left Rear Up Control
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  • • 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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