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Body Control System Connectors

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) - 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 Signal
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) - 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 DK BLU 245 Passenger Door Lock Switch Unlock Control - Base
TAN/BLK 254 Rear Door Unlock Relay Control (YE9 w/ Crew Cab)
A4 PNK/WHT 1970 Headlamp Low Beam Relay Control
A5 DK GRN/
WHT		 1317 Fog Lamp Relay Control (T96)
A6 LT BLU 244 Passenger Door Lock Switch Lock Control - Base
GRY/BLK 255 Rear Door Lock Relay Control (YE9 w/ Crew Cab)
A7 - - Not Used (YE9)
LT GRN 1391 Driver Door Unlock Relay Control - Base
A8 WHT 193 Rear Defog Relay Control (C49)
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) - 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 - - Not Used (CJ3)
GRY 1548 Passenger Sunload Sensor Signal - w/ CJ2
A6 YEL 1836 Security System Sensor Signal
A7 - - Not Used - Base
LT GRN 1011 Remote Radio Control Signal (YE9)
A8 DK GRN 588 DRL Switch Signal
A9 ORN 192 Front Fog Lamp Switch Signal (T96)
A10 - - Not Used
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 - - Not Used (CJ3)
LT BLU/BLK 590 Driver Sunload Sensor Signal - w/ CJ2
B6 BLK/WHT 1851 Ground
B7 - - Not Used
LT BLU 1059 Steering Wheel Position Sensor Signal - w/ NYS
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) - 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 - - Not Used (YE9)
BLK/WHT 746 Right Front Door Ajar Switch Signal (Base)
A6 DK BLU/
WHT		 149 Cargo Lamp Low Control
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 - - Not Used (YE9)
GRY/BLK 745 Left Front Door Ajar Switch Signal - Base
B5 - - Not Used (YE9)
LT BLU 195 Door Lock Control - Base
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 - - Not Used (YE9)
WHT 194 Door Unlock Control - Base
B11-B12 - - Not Used
Body Control Module (BCM) - 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) - 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 - - Not Used
A2 LT GRN/BLK 748 Right Rear Door Ajar Switch Signal (Crew Cab)
A3 LT BLU/BLK 747 Left Rear Door Ajar Switch Signal (Crew Cab)
A4 - - Not Used
A5 - - Not Used - Base
LT BLU 2265 Power Window Lockout Left Rear Control - Uplevel (YE9 w/ Crew Cab)
A6 - - Not Used - Base
LT GRN 2266 Power Window Lockout Right Rear Control (YE9 w/ Crew Cab)
A7 - - Not Used - Base
GRY/BLK 1186 Power Window Relay Right Rear Up Control (YE9 w/ Crew Cab)
A8 - - Not Used - Base
DK GRN 1188 Power Window Relay Right Rear Down Control (YE9 w/ Crew Cab)
B1-B6 - - Not Used
B7 - - Not Used - Base
YEL 1187 Power Window Relay Left Rear Down Control (YE9 w/ Crew Cab)
B8 - - Not Used - Base
WHT 1185 Power Window Relay Left Rear Up Control (YE9 w/ Crew Cab)
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