| Connector 1: | Powertrain Control Module (PCM) C1 | 
| Connector 2: | Powertrain Control Module (PCM) C2 | 
| Connector 3: | Powertrain Control Module (PCM) C3 | 
Connector Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
1  | TN/BK  | 2500  | High Speed GMLAN Serial Data (+)  | 
2  | TN  | 2501  | High Speed GMLAN Serial Data (-)  | 
3  | --  | --  | Not Used  | 
4  | GY  | 2700  | 5-Volt Reference  | 
5  | --  | --  | Not Used  | 
6  | BN/WH  | 419  | MIL Control  | 
7  | TN  | 5514  | Low Reference  | 
8-9  | --  | --  | Not Used  | 
10  | WH  | 1310  | EVAP Canister Vent Solenoid Control  | 
11  | --  | --  | Not Used  | 
12  | TN  | 2759  | Low Reference  | 
13-17  | --  | --  | Not Used  | 
18  | YE  | 743  | Accessory Voltage  | 
19  | PK  | 639  | Ignition 1 Voltage  | 
20  | RD/WH  | 1440  | Battery Positive Voltage  | 
21  | --  | --  | Not Used  | 
22  | BN  | 818  | VSS Signal  | 
23  | YE  | 447  | Starter Relay Coil Control  | 
24  | BN  | 5069  | Engine Main Relay Coil Control  | 
25  | --  | --  | Not Used  | 
26  | D-GN  | 890  | Fuel Tank Pressure Sensor Signal  | 
27-30  | --  | --  | Not Used  | 
31  | OG/BK  | 380  | A/C Refrigerant Pressure Sensor Signal  | 
32  | L-BU  | 20  | Stop Lamp Supply Voltage  | 
33  | D-GN/WH  | 459  | A/C Compressor Clutch Relay Control  | 
34-36  | --  | --  | Not Used  | 
37  | D-GN/WH  | 465  | Fuel Pump Primary Relay Control  | 
38  | OG/BK  | 1786  | Transmission Park/Neutral Signal  | 
39-42  | --  | --  | Not Used  | 
43  | PU  | 1589  | Primary Fuel Level Sensor Signal  | 
44  | GY  | 1884  | Cruise Control Set/Coast/Resume/Accelerate Switch Signal  | 
45  | --  | --  | Not Used  | 
46  | PU  | 420  | Torque Converter Clutch Brake Switch Signal  | 
47  | --  | --  | Not Used  | 
48  | D-GN  | 335  | Low Speed Cooling Fan Relay Control  | 
49  | --  | --  | Not Used  | 
50  | D-BU  | 473  | High Speed Cooling Fan Relay Control  | 
51-52  | --  | --  | Not Used  | 
53  | GY  | 2709  | Fuel Tank Pressure Sensor 5-Volt Reference  | 
54-56  | --  | --  | Not Used  | 
Connector Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
1  | BN  | 1456  | Exhaust Gas Recirculation Valve Position Signal  | 
2  | TN  | 800  | UART Serial Data 1  | 
3  | OG/BK  | 1061  | UART Serial Data 2  | 
4  | PK/BK  | 1746  | Fuel Injector Control 3  | 
5  | TN  | 1744  | Fuel Injector Control 1  | 
6  | L-GN/BK  | 1745  | Fuel Injector Control 2  | 
7  | TN/WH  | 845  | Fuel Injector Control 5  | 
8  | TN  | 2753  | Exhaust Gas Recirculation Sensor Low Reference  | 
9  | YE/BK  | 846  | Fuel Injector Control 6  | 
10  | L-BU/BK  | 844  | Fuel Injector Control 4  | 
11  | OG/WH  | 2122  | IC 2 Control  | 
12  | GY/WH  | 3113  | Heated Oxygen Sensor Heater Low Control Bank 1 Sensor 1  | 
13  | OG  | 1676  | Exhaust Gas Recirculation Solenoid Supply Voltage  | 
14  | --  | --  | Not Used  | 
15  | PU  | 574  | Low Reference  | 
16  | GY  | 435  | Exhaust Gas Recirculation Solenoid Control  | 
17  | --  | --  | Not Used  | 
18  | L-GN  | 432  | Manifold Absolute Pressure Sensor Signal  | 
19-20  | --  | --  | Not Used  | 
21  | OG  | 631  | Camshaft Sensor 12-Volt Reference  | 
22  | L-GN  | 1867  | Crankshaft Position Sensor 12-Volt Reference  | 
23-25  | --  | --  | Not Used  | 
26  | BN/WH  | 633  | Camshaft Position Sensor Signal  | 
27  | L-BU/BK  | 647  | Medium Resolution Engine Speed Signal  | 
28-29  | --  | --  | Not Used  | 
30  | OG/BK  | 469  | Manifold Absolute Pressure Sensor Low Reference  | 
31  | --  | --  | Not Used  | 
32  | PK/BK  | 632  | Camshaft Position Sensor Low Reference  | 
33  | GY  | 5047  | Exhaust Gas Recirculation 5-Volt Reference  | 
34  | GY  | 2704  | 5-Volt Reference  | 
35  | --  | --  | Not Used  | 
36  | GY  | 2303  | KS 2 Signal  | 
37  | YE  | 2174  | Ignition Control Timing Low Reference 1  | 
38  | D-BU  | 496  | KS 1 Signal  | 
39  | BK/WH  | 1251  | Ground  | 
40  | GY  | 1716  | KS 1 Signal  | 
41  | D-GN/WH  | 428  | EVAP Canister Purge Solenoid Control  | 
42-46  | --  | --  | Not Used  | 
47  | TN/WH  | 1653  | HO2S 1 Low Signal  | 
48  | PU/WH  | 1665  | HO2S 1 High Signal  | 
49-52  | --  | --  | Not Used  | 
53  | OG  | 225  | Generator Turn On Signal  | 
54  | L-BU  | 1876  | KS 2 Signal  | 
55  | YE  | 410  | Engine Coolant Temperature Sensor Signal  | 
56  | BK/WH  | 1351  | Ground  | 
57  | TN/BK  | 231  | Oil Pressure Switch Signal  | 
58-60  | --  | --  | Not Used  | 
61  | PU  | 2121  | IC 1 Control  | 
62  | --  | --  | Not Used  | 
63  | L-BU  | 2123  | Ignition Control 3  | 
64-72  | --  | --  | Not Used  | 
73  | BK/WH  | 451  | Ground  | 
Connector Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
1-3  | --  | --  | Not Used  | 
4  | TN/WH  | 1669  | HO2S 2 Low Signal  | 
5  | --  | --  | Not Used  | 
6  | YE  | 492  | Mass Air Flow Sensor Signal  | 
7  | --  | --  | Not Used  | 
8  | GY/WH  | 3122  | HO2S 2 Heater Low Control  | 
9-18  | --  | --  | Not Used  | 
19  | PU/WH  | 1668  | HO2S 2 High Signal  | 
20-25  | --  | --  | Not Used  | 
26  | TN  | 472  | Intake Air Temperature Sensor Signal  | 
27-49  | --  | --  | Not Used  | 
50  | TN  | 2760  | Intake Air Temperature Sensor Low Reference  | 
51-56  | --  | --  | Not Used  |