For 1990-2009 cars

Table 1: | Body Control Module (BCM), C1
Table 2: | Body Control Module (BCM), C2
Table 3: | Body Control Module (BCM), C3

#### Body Control Module (BCM), C1

Connector Part Information |

• | 12084945

• | 16-Way F Micro-Pack 100 Series (GRY)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1 | PNK/WHT | 1970 | Headlamp Low Beam Relay Control
A2 | DK GRN/ WHT | 1317 | Fog Lamp Relay Control
A3 | GRY/BLK | 308 | Park Lamp Switch Signal
A4 | BLK | 28 | Horn Relay Control
A5 | -- | -- | Not Used
A6 | YEL | 1977 | Rear Fog Lamp Relay Control - Export
A6 | -- | -- | Not Used - Domestic
A7 | -- | -- | Not Used
A8 | PPL | 1600 | Ignition 0 Voltage
B1 | WHT | 1080 | Park Lamp Relay Control
B2 | -- | -- | Not Used
B3 | LT BLU | 1344 | Trunk Release Relay Control
B4 | -- | -- | Not Used
B5 | LT GRN/ BLK | 592 | DRL Relay Control
B6 | -- | -- | Not Used
B7 | LT GRN/ BLK | 394 | Driver Door Ajar Switch Signal
B8 | BRN | 341 | Ignition 3 Voltage

#### Body Control Module (BCM), C2

Connector Part Information |

• | 12110088

• | 24-Way F Micro-Pack 100 Series (GRY)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1 | -- | -- | Not Used
A2 | WHT | 682 | Door Lock Lock/Unlock Signal
A3 | YEL/BLK | 1138 | DRL Ambient Light Sensor Low Reference
A4 | -- | -- | Not Used
A5 | PNK | 1200 | Headlamp High Beam Signal
A6 | BLK | 1835 | Security System Sensor Low Reference-Domestic Only
A7 | BLK | 1576 | Trunk Release Switch Signal
A8 | LT GRN | 696 | Cruise Control Cancel Signal-Oldsmobile Only
A9 | LT BLU | 1134 | Park Brake Switch Signal
A10-A11 | -- | -- | Not Used
A12 | PNK/BLK | 1379 | Oil Life/TPM Reset Switch Signal
B1 | ORN | 1732 | Courtesy Lamps Supply Voltage
B2 | LT GRN/ BLK | 1137 | DRL Ambient Light Sensor Signal
B3 | -- | -- | Not Used
B4 | DK BLU | 1201 | Headlamp Low Beam Signal
B5 | -- | -- | Not Used
B6 | YEL | 1836 | Security System Sensor Signal-Domestic
-- | -- | Not Used-Export
B7 | LT BLU | 187 | Rear Fog Lamp Switch Signal-Export
-- | -- | Not Used-Domestic
B8 | BRN | 9 | Park Lamp Supply Voltage
B9 | PNK | 439 | Ignition 1 Voltage
B10 | LT BLU | 395 | Passenger Door Ajar Switch Signal
B11 | BLK/WHT | 238 | Seat Belt Switch - Left
B12 | LT GRN | 80 | Key In Ignition Switch Signal

#### Body Control Module (BCM), C3

Connector Part Information |

• | 12110244

• | 24-Way F Micro-Pack 100 Series (PNK)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1 | -- | -- | Not Used
A2 | YEL | 356 | Driver Door Lock Relay Unlock Control
A3 | -- | -- | Not Used
A4 | ORN | 192 | Front Fog Lamp Switch Signal
A5 | BRN/WHT | 1571 | Traction Control Switch Signal
A6 | BLK/WHT | 99 | Windshield Washer Fluid Level Signal
A7 | -- | -- | Not Used
A8 | LT BLU | 195 | Door Lock Control
A9 | -- | -- | Not Used
A10 | BLK/WHT | 151 | Ground
A11 | WHT | 156 | Courtesy Lamp Low Control
A12 | ORN | 340 | Battery Positive Voltage
B1 | ORN | 1540 | Battery Positive Voltage
B2 | PPL | 1807 | Class 2 Serial Data
B3 | WHT | 194 | Door Unlock Control
B4 | WHT | 1459 | Security System Sensor Supply Voltage- Domestic Only
B5 | -- | -- | Not Used
B6 | YEL/BLK | 68 | Low Coolant Level Indicator Control
B7 | LT GRN | 66 | A/C Request Signal
B8-B12 | -- | -- | Not Used