For 1990-2009 cars

Connector 1: | Body Control Module (BCM) X1
Connector 2: | Body Control Module (BCM) X2
Connector 3: | Body Control Module (BCM) X3
Connector 4: | Body Control Module (BCM) X4
Connector 5: | Data Link Connector (DLC)
Connector 6: | Data Link Resistor
Connector 7: | Splice Pack XJ200

### Body Control Module (BCM) X1

#### Connector Part Information

- OEM: 15393122
- Description: 72-Way F Micro-64 Unsealed (BU with GY case)

#### Body Control Module (BCM) X1

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1-5 | -- | -- | Not Used
6 | 0.35 WH | 682 | Door Lock/Unlock Signal (AU3)
7 | 0.35 WH | 682 | Door Lock/Unlock Signal (AU3)
8 | 0.35 WH | 1080 | Park Lamp Relay Control
9-12 | -- | -- | Not Used
13 | 0.35 PK | 849 | Brake Fluid Level Sensor Signal
14 | 0.5 L-BU | 1134 | Park Brake Switch Signal
15 | 0.35 YE | 5199 | Run/Crank Relay Coil Control
16 | 0.35 WH | 193 | Rear Defog Relay Control
17 | 0.5 D-BU | 15 | Right Turn Signal Lamps Supply Voltage
18 | -- | -- | Not Used
19 | 0.35 TN/WH | 746 | Right Front Door Ajar Switch Signal
20-21 | -- | -- | Not Used
22 | 0.35 GY/BK | 745 | Left Front Door Ajar Switch Signal
23-25 | -- | -- | Not Used
26 | 0.5 L-GN | 1478 | Coolant Level Switch Signal
27-30 | -- | -- | Not Used
31 | 0.35 WH | 5065 | Stop Lamp Relay Coil Supply Voltage
32-34 | -- | -- | Not Used
35 | 0.5 L-BU | 14 | Left Turn Signal Lamps Supply Voltage
36-39 | -- | -- | Not Used
40 | 0.35 L-BU | 1788 | Traction Control Switch Signal (NW9)
41-43 | -- | -- | Not Used
44 | 0.35 TN/WH | 1969 | Headlamp High Beam Relay Control
45-46 | -- | -- | Not Used
47 | 0.35 YE | 196 | Windshield Wiper Motor Park Switch Signal
48-50 | -- | -- | Not Used
51 | 0.35 D-GN | 113 | Windshield Wiper Relay Control
52 | -- | -- | Not Used
53 | 0.5 L-BU | 20 | Stop Lamp Supply Voltage
54 | 0.35 YE | 317 | Fog Lamp Relay Control (T96)
55 | 0.35 OG/BK | 744 | Rear Compartment Lid Ajar Switch Signal
56 | 0.5 OG/BK | 737 | Rear Compartment Lamp Control
57 | 0.35 BN | 253 | Trunk Release Relay Control
58-59 | -- | -- | Not Used
60 | 0.35 TN | 28 | Horn Relay Control
61 | 0.5 BK/WH | 651 | Ground
62-66 | -- | -- | Not Used
67 | 0.5 YE | 61 | Low Reference
68-69 | -- | -- | Not Used
70 | 0.5 D-GN/WH | 636 | Ambient Air Temperature Sensor
71-72 | -- | -- | Not Used

### Body Control Module (BCM) X2

#### Connector Part Information

- OEM: 15393121
- Description: 72-Way F Micro-64 Unsealed (GY)

#### Body Control Module (BCM) X2

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+)
2 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+)
3 | 0.35 PK/WH | 1970 | Headlamp Low Beam Relay Control
4 | 0.35 PU | 524 | Headlamp Dimmer Switch High Beam Signal
5 | 0.35 BN/WH | 301 | Park Lamp Switch On Signal
6 | 0.35 L-BU | 187 | Rear Fog Lamp Switch Signal (T79)
7-8 | -- | -- | Not Used
9 | 0.35 WH | 111 | Hazard Switch Signal
10 | 0.35 TN | 1576 | Rear Compartment Lock Actuator Unlock
11 | 0.35 D-GN | 264 | Security Indicator Supply Voltage
12-13 | -- | -- | Not Used
14 | 0.35 TN | 28 | Horn Relay Control
15 | 0.35 WH | 103 | Headlamp Switch Headlamps On Signal
16 | 0.35 OG | 192 | Front Fog Lamp Switch Signal (T96)
17 | 0.35 PU/WH | 549 | Headlamp Switch Headlamps Off Signal
18 | 0.35 GY | 5359 | 5-Volt Reference
19 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-)
20 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-)
21 | -- | -- | Not Used
22 | 0.35 YE | 1977 | Rear Fog Lamp Relay Control (T79)
21-25 | -- | -- | Not Used
26 | 0.35 D-GN | 44 | Instrument Panel Lamp Dimmer Switch Signal
27-30 | -- | -- | Not Used
31 | 0.35 YE | 5361 | Brake Pedal Position Sensor Signal
32 | -- | -- | Not Used
33 | 0.35 YE | 317 | Fog Lamp Relay Control (T96)
34-37 | -- | -- | Not Used
38 | 0.35 L-GN/BK | 5060 | Low Speed GMLAN Serial Data
39-43 | -- | -- | Not Used
44 | 0.35 L-GN/BK | 1137 | DRL Ambient Light Sensor Signal
45-46 | -- | -- | Not Used
47 | 0.35 YE/BK | 1138 | DRL Ambient Light Sensor Low Reference
48-50 | -- | -- | Not Used
51 | 0.35 BN | 1356 | Flash To Pass Switch Signal
52-55 | -- | -- | Not Used
56 | 0.35 WH | 1390 | Off/Run/Crank Voltage
57 | 0.35 GY | 112 | Windshield Wiper Switch Low/Pulse Signal
58 | 0.35 PU | 719 | Low Reference
59 | 0.35 BN | 5360 | Low Reference
60 | -- | -- | Not Used
61 | 0.35 GY | 1884 | Cruise Control Switch Signal (K34)
62 | 0.35 WH/BK | 1073 | Ignition Key Resistor Signal
63-65 | -- | -- | Not Used
66 | 0.35 YE/BK | 1418 | Left Rear Turn Signal Switch Signal
67 | 0.35 D-GN/WH | 1419 | Right Rear Turn Signal Switch Signal
68 | 0.35 L-BU | 292 | Rear Defog Switch Signal
69 | 0.35 D-GN/WH | 762 | A/C Request Signal (C60)
70 | -- | -- | Not Used
71 | 0.35 PU | 5234 | Passenger Seat Belt Indicator
72 | 0.35 WH | 193 | Rear Defogger Relay Control

### Body Control Module (BCM) X3

#### Connector Part Information

- OEM: 15492675
- Description: 41-Way F Metri-Pack 280 800 Series (RD)

#### Body Control Module (BCM) X3

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1 | 0.5 TN | 294 | Door Lock Actuator Unlock Control (AU3)
A2 | -- | -- | Not Used
A3 | 0.5 D-BU/WH | 149 | Courtesy Lamp Supply Voltage
A4 | 0.5 GY | 295 | Door Lock Actuator Lock Control (AU3)
A5 | 0.5 GY | 295 | Door Lock Actuator Lock Control (AU3)
A6 | -- | -- | Not Used
A7 | 0.5 BN | 9 | Park Lamp Supply Voltage
A8 | 0.5 PK | 339 | Ignition 1 Voltage
A9 | 0.8 YE | 618 | Left Rear Turn Signal Lamp Supply Voltage
A10 | 0.5 GY | 157 | Courtesy Lamp Control
A11 | -- | -- | Not Used
A12 | 0.8 D-GN | 619 | Right Rear Turn Signal Lamp Supply Voltage
B1 | 0.5 TN | 694 | Driver Door Lock Actuator Unlock Control (AU3)
B2 | -- | -- | Not Used
B3 | 0.35 RD/WH | 1240 | Battery Positive Voltage
B4 | -- | -- | Not Used
B5 | 0.35 BN | 4 | Accessory Voltage
B6-B7 | -- | -- | Not Available
B8-B11 | -- | -- | Not Used
B12 | 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage
C1-C2 | -- | -- | Not Available
C3-C4 | -- | -- | Not Used
C5 | 3.0 D-GN | 801 | Retained Accessory Power Fuse Supply Voltage
C6-C7 | -- | -- | Not Available
C8-C11 | -- | -- | Not Used
C12 | 0.35 OG | 228 | Windshield Washer Pump Control
D1 | 5.0 RD/BK | 142 | Battery Positive Voltage
D2-D3 | -- | -- | Not Used
D4 | 0.5 RD/WH | 840 | Battery Positive Voltage
D5 | 3.0 D-GN | 801 | Retained Accessory Power Fuse Supply Voltage (AU3)
D6 | 3.0 PK | 739 | Ignition 1 Voltage
D7 | 0.35 PK | 1339 | Ignition 1 Voltage
D8-D9 | -- | -- | Not Used
D10 | 3.0 RD/BK | 442 | Battery Positive Voltage
D11 | 2.0 RD/WH | 640 | Battery Positive Voltage (UQ3)
D12 | 3.0 RD/BK | 242 | Battery Positive Voltage

### Body Control Module (BCM) X4

#### Connector Part Information

- OEM: 15492668
- Description: 68-Way F Metri-Pack 280 Series, Flexlock (L-GY)

#### Body Control Module (BCM) X4

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1-A12 | -- | -- | Not Used
B1 | 0.35 OG | 228 | Windshield Washer Pump Control
B2-B12 | -- | -- | Not Used
C1 | 0.35 RD/WH | 1440 | Battery Positive Voltage
C2-C5 | -- | -- | Not Used
C6-C7 | -- | -- | Not Available
C8 | 0.35 BN | 4 | Accessory Voltage
C9-C10 | -- | -- | Not Used
C11 | 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage
C12 | 0.35 GY/BK | 1458 | Instrument Panel Lamp Supply Voltage (4)
D1 | 0.35 RD/WH | 1040 | Battery Positive Voltage
D2 | -- | -- | Not Used
D3 | 0.35 YE | 5199 | Run/Crank Relay Coil Control
D4 | 3.0 BN | 141 | Ignition 3 Voltage
D5 | -- | -- | Not Used
D6-D7 | -- | -- | Not Available
D8-D9 | -- | -- | Not Used
D10 | 0.8 RD/WH | 1140 | Battery Positive Voltage
D11 - D12 | -- | -- | Not Used
E1-E5 | -- | -- | Not Used
E6 | 0.35 PK | 439 | Ignition 1 Voltage
E7-E11 | -- | -- | Not Used
E12 | 2.0 BK | 550 | Ground
F1 | 0.35 RD/WH | 1540 | Battery Positive Voltage
F2 | 0.5 GY | 8 | Instrument Panel Lamp Supply Voltage
F3 | -- | -- | Not Used
F4 | 0.5 PK | 339 | Ignition 1 Voltage
F5 | 0.35 PK | 339 | Ignition 1 Voltage
F6 | 0.5 PK | 339 | Ignition 1 Voltage
F7-F8 | -- | -- | Not Used
F9 | 0.35 PK | 1539 | Ignition 1 Voltage
F10-F12 | -- | -- | Not Used

### Data Link Connector (DLC)

#### Connector Part Information

- OEM: 12110250
- Description: 16-Way F Metri-Pack 150 Series (BK)

#### Data Link Connector (DLC)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | 0.35 D-GN | 5060 | Low Speed GMLAN Serial Data
2-3 | -- | -- | Not Used
4 | 0.5 BK | 550 | Ground
5 | 0.5 BK/WH | 651 | Ground
6 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+)
7-13 | -- | -- | Not Used
14 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-)
15 | -- | -- | Not Used
16 | 0.5 RD/WH | 40 | Battery Positive Voltage

### Data Link Resistor

#### Connector Part Information

- OEM: 15326801
- Description: 2-Way F GT 150 Series (BK)

#### Data Link Resistor

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+)
B | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-)

### Splice Pack XJ200

#### Connector Part Information

- OEM: 12191216
- Description: 12-Way F GT 150 Series, Unsealed (L-GY)

#### Splice Pack XJ200

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A | D-GN | 5060 | Low Speed GMLAN Serial Data
B | L-GN | 5060 | Low Speed GMLAN Serial Data
C | L-GN/BK | 5060 | Low Speed GMLAN Serial Data
D | D-GN/BK | 5060 | Low Speed GMLAN Serial Data
E | D-GN/RD | 5060 | Low Speed GMLAN Serial Data
F | D-GN/WH | 5060 | Low Speed GMLAN Serial Data
G-J | -- | -- | Not Used
K | D-GN/YE | 5060 | Low Speed GMLAN Serial Data
L-M | -- | -- | Not Used