| Connector 1: | Engine Control Module (ECM) C1 |
| Connector 2: | Engine Control Module (ECM) C2 |
| Connector 3: | Engine Control Module (ECM) C3 |
Engine Control Module (ECM) C1
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | TN/WH | 2500 | High Speed GMLAN Serial Data Bus (+) |
2 | TN | 2501 | High Speed GMLAN Serial Data Bus (-) |
3 | -- | -- | Not Used |
4 | BN/WH | 419 | MIL Control |
5-6 | -- | -- | Not Used |
7 | BN | 1271 | Low Reference |
8 | PU | 1272 | Low Reference |
9 | -- | -- | Not Used |
10 | WH/BK | 448 | Powertrain Diagnostic Enable |
11-12 | -- | -- | Not Used |
13 | YE/BK | 625 | Starter Enable Relay Control |
14 | PK | 839 | Ignition 1 Voltage |
15 | D-GN | 1049 | ECM Class 2 Serial Data |
16 | YE | 710 | Class 2 Serial Data |
17 | GY | 397 | Cruise Control On Switch Signal (K34) |
18 | PK | 1020 | Ignition 0 Voltage |
19 | PK | 439 | Ignition 1 Voltage |
20 | OG | 440 | Battery Positive Voltage |
21 | D-GN/WH | 817 | Vehicle Speed Signal |
22 | D-BU | 1161 | APP Sensor 1 Signal |
23 | -- | -- | Not Used |
24 | D-GN | 890 | Fuel Tank Pressure Sensor Signal |
25 | -- | -- | Not Used |
26 | RD/BK | 380 | A/C Refrigerant Pressure Sensor Signal |
27 | D-BU | 84 | Cruise Control Set/Coast Switch Signal (K34) |
28 | -- | -- | Not Used |
29 | TN | 1274 | 5-Volt Reference |
30 | GY | 2700 | 5-Volt Reference |
31 | GY | 2709 | 5-Volt Reference |
32 | L-BU | 1320 | CHMSL Supply Voltage (K34) |
33 | GY/BK | 87 | Cruise Control Resume/Accel Switch Signal (K34) |
34 | -- | -- | Not Used |
35 | WH/BK | 1164 | 5-Volt Reference |
36 | D-GN | 335 | Low Speed Cooling Fan Relay Control |
37 | PU | 1589 | Fuel Level Sensor Signal |
38-40 | -- | -- | Not Used |
41 | L-BU | 1162 | APP Sensor 2 Signal |
42 | L-GN | 1652 | Reverse Lockout Solenoid Control (M12) |
43 | GY | 48 | CPP Switch Signal (M12) |
44 | -- | -- | Not Used |
45 | D-GN/WH | 465 | Fuel Pump Relay Control |
46 | PU | 420 | TCC Brake Switch/Cruise Control Release Signal |
47 | -- | -- | Not Used |
48 | WH | 121 | Engine Speed Signal |
49 | YE/BK | 1827 | Vehicle Speed Signal |
50 | -- | -- | Not Used |
51 | D-GN | 1433 | PNP Start Switch Signal (M32) |
D-GN | 1433 | Clutch Start Switch Signal (M12) | |
52 | PU | 806 | Crank Voltage |
53 | -- | -- | Not Used |
54 | WH | 1310 | EVAP Canister Vent Solenoid Control |
55 | BK | 2751 | Low Reference |
56 | D-BU | 473 | High Speed Cooling Fan Relay Control |
Engine Control Module (ECM) C2
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | L-GN | 3212 | HO2S Heater Low Control - Bank 2 Sensor 1 |
2 | BK/WH | 3113 | HO2S Heater Low Control - Bank 1 Sensor 1 |
3 | -- | -- | Not Used |
4 | D-BU/WH | 878 | Fuel Injector 8 Control |
5 | BK | 1744 | Fuel Injector 1 Control |
6 | L-GN/BK | 1745 | Fuel Injector 2 Control |
7 | RD/BK | 877 | Fuel Injector 7 Control |
8 | L-BU/BK | 844 | Fuel Injector 4 Control |
9 | PK/BK | 1746 | Fuel Injector 3 Control |
10 | BK/WH | 845 | Fuel Injector 5 Control |
11-12 | -- | -- | Not Used |
13 | YE/BK | 846 | Fuel Injector 6 Control |
14 | YE/BK | 1868 | Low Reference |
15 | PK/BK | 632 | Low Reference |
16 | BN | 2129 | Low Reference |
17-19 | -- | -- | Not Used |
20 | OG/BK | 469 | Low Reference |
21 | BK | 407 | Low Reference |
22-23 | -- | -- | Not Used |
24 | TN /WH | 332 | Oil Pressure Sensor Signal |
25 | -- | -- | Not Used |
26 | BN/WH | 633 | CMP Sensor Signal |
27-28 | -- | -- | Not Used |
29 | PU | 486 | TP Sensor 2 Signal |
30 | -- | -- | Not Used |
31 | D-GN | 485 | TP Sensor 1 Signal |
32-34 | -- | -- | Not Used |
35 | GY | 2704 | 5-Volt Reference |
36 | BK/WH | 1704 | Low Reference |
37 | GY | 705 | 5-Volt Reference |
38-40 | -- | -- | Not Used |
41 | L-BU /BK | 1688 | 5-Volt Reference |
42 | -- | -- | Not Used |
43 | L-GN | 1867 | 12-Volt Reference |
44 | RD | 631 | 12-Volt Reference |
45 | GY | 23 | Generator Field Duty Cycle Signal |
46 | L-GN | 432 | MAP Sensor Signal |
47 | -- | -- | Not Used |
48 | PU/WH | 1665 | HO2S High Signal - Bank 1 Sensor 1 |
49 | TN | 1664 | HO2S Low Signal - Bank 1 Sensor 1 |
50 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
51 | PU | 1666 | HO2S High Signal - Bank 2 Sensor 1 |
52 | GY | 720 | Low Reference |
53 | RD | 2127 | IC 7 Control |
54 | PU | 2121 | IC 1 Control |
55 | YE | 410 | ECT Sensor Signal |
56 | RD | 225 | Generator Turn On Signal |
57 | L-BU/WH | 2126 | IC 6 Control |
58 | D-GN/WH | 2124 | IC 4 Control |
59 | D-GN | 2125 | IC 5 Control |
60 | BN | 582 | TAC Motor Control - 2 |
61 | L-BU | 2123 | IC 3 Control |
62 | D-BU/WH | 1869 | CKP Sensor Signal |
63 | YE | 581 | TAC Motor Control - 1 |
64 | BN/WH | 2130 | Low Reference |
65 | PU/WH | 2128 | IC 8 Control |
66 | RD/WH | 2122 | IC 2 Control |
67 | -- | -- | Not Used |
68 | D-BU | 496 | KS 1 Signal |
69 | GY | 1716 | KS 1 Signal |
70 | TN | 1667 | HO2S Low Signal - Bank 2 Sensor 1 |
71 | L-BU | 2303 | KS 2 Signal |
72 | D-BU | 1876 | KS 2 Signal |
73 | BK | 450 | Ground |
Engine Control Module (ECM) C3
Connector Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | -- | -- | Not Used |
2 | BN | 2391 | HO2S Heater Low Control - Bank 1 Sensor 2 |
3 | RD/WH | 3223 | HO2S Heater Low Control - Bank 2 Sensor 2 |
4-10 | -- | -- | Not Used |
11 | YE | 492 | MAF Sensor Signal |
12-17 | -- | -- | Not Used |
18 | TN/WH | 1669 | HO2S Low Signal - Bank 1 Sensor 2 |
19 | PU/WH | 1668 | HO2S High Signal - Bank 1 Sensor 2 |
20 | PU | 1670 | HO2S High Signal - Bank 2 Sensor 2 |
21 | TN | 1671 | HO2S Low Signal - Bank 2 Sensor 2 |
22 | OG/BK | 1786 | Ignition Lockcylinder Control Actuator Signal (M32) |
23 | -- | -- | Not Used |
24 | BK | 2760 | Low Reference |
25-33 | -- | -- | Not Used |
34 | TN | 472 | IAT Sensor Signal |
35-37 | -- | -- | Not Used |
38 | TN/BK | 464 | Delivered Torque Signal |
39-43 | -- | -- | Not Used |
44 | L-GN/BK | 822 | VSS Low Signal (M12) |
45 | PU/WH | 821 | VSS High Signal (M12) |
45 | YE | 400 | VSS High Signal (M32) |
46 | -- | -- | Not Used |
47 | OG/BK | 463 | Requested Torque Signal |
48 | -- | -- | Not Used |
49 | BK | 2759 | Low Reference |
50 | -- | -- | Not Used |
51 | D-GN/WH | 459 | A/C Compressor Clutch Relay Control |
52-56 | -- | -- | Not Used |
