| 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
|
Terminal Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | PU | 806 | Crank Voltage |
2 | PU | 420 | TCC Brake Switch/Cruise Control Release Signal |
3 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
4 | GY/BK | 1694 | 4WD Low Signal (NP8) |
5-6 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
7 | L-BU | 1320 | CHMSL Supply Voltage (K34) |
8 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
9 | BK | 2759 | Low Reference |
10-11 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
12 | BN/WH | 419 | MIL Control |
13 | D-GN/WH | 465 | Fuel Pump Relay Control |
14-15 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
16 | D-GN | 1049 | Class 2 Serial Data |
17 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
18 | PK | 1020 | Ignition 0 Voltage |
19 | PK | 439 | Ignition 1 Voltage |
20 | OG | 240 | Battery Positive Voltage |
21 | GY/BK | 87 | Cruise Control Resume/Accel Switch Signal (K34) |
22 | D-BU | 84 | Cruise Control Set/Coast Switch Signal (K34) |
23 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
24 | YE/BK | 1827 | Vehicle Speed Signal |
25 | WH | 121 | Engine Speed Signal |
26-29 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
30 | GY | 397 | Cruise Control On Switch Signal (K34) |
31 | BK | 452 | Low Reference |
32 | GY | 416 | 5-Volt Reference |
33 | WH/BK | 1164 | 5-Volt Reference |
34 | GY | 2709 | 5-Volt Reference |
35 | TN | 1274 | 5-Volt Reference |
36 | BN | 1271 | Low Reference |
37 | PU | 1272 | Low Reference |
38 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
39 | D-GN/WH | 817 | Vehicle Speed Signal |
40 | YE | 5991 | Powertrain Relay Coil Control |
41-43 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
44 | PU | 1589 | Fuel Level Sensor Signal |
45 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
46 | D-BU | 1809 | Brake Booster Vacuum Sensor |
47 | D-BU | 1161 | APP Sensor 1 Signal |
48 | D-GN | 890 | Fuel Tank Pressure Sensor |
49 | L-BU | 1162 | App Sensor 2 Signal |
50-52 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
53 | D-GN/WH | 459 | A/C Compressor Clutch Relay Control |
54 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
55 | WH | 1310 | EVAP Canister Vent Solenoid Control |
56 | YE/BK | 625 | Starter Enable Relay Control |
Engine Control Module (ECM) C2
Connector Part Information
|
Terminal Part Information-
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1 | PU | 2121 | IC 1 Control |
2 | TN | 1664 | HO2S Low Signal - Bank 1 Sensor 1 |
3 | PU/WH | 1665 | HO2S High Signal - Bank 1 Sensor 1 |
4 | PU/WH | 1668 | HO2S High Signal - Bank 1 Sensor 2 |
5 | TN/WH | 1669 | HO2S Low Signal - Bank 1 Sensor 2 |
6 | L-BU | 1876 | KS 2 Signal |
7 | GY | 2303 | KS 2 Signal |
8 | D-BU | 496 | KS 1 Signal |
9 | GY | 1716 | KS 1 Signal |
10 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
11 | YE | 581 | TAC Motor Control 1 |
12 | BN | 582 | TAC Motor Control 2 |
13 | PK | 839 | Ignition 1 Voltage |
14-15 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
16 | PK/BK | 1746 | Fuel Injector 3 Control |
17 | PU/WH | 2128 | IC 8 Control |
18 | D-GN/WH | 2124 | IC 4 Control |
19 | BN/WH | 2130 | Low Reference |
20-22 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
23 | BN/WH | 633 | Low Reference (Early Production) |
PK/BK | 632 | Low Reference (Late Production) | |
24 | BK | 2755 | Low Reference |
25-26 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
27 | D-BU/WH | 1869 | Low Reference (Early Production) |
YE/BK | 1868 | Low Reference (Late Production) | |
28 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
29 | BK/WH | 1704 | Low Reference |
30-31 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
32 | L-GN/BK | 1745 | Fuel Injector 2 Control |
33 | RD | 2127 | IC 7 Control |
34 | D-GN | 2125 | IC 5 Control |
35 | BN | 2129 | Low Reference |
36-38 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
39 | RD | 631 | 5-Volt Reference |
40 | GY | 2705 | 5-Volt Reference |
41 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
42 | BK | 2760 | Low Reference |
43 | L-GN | 1867 | 5-Volt Reference |
44 | L-BU/BK | 1688 | 5-Volt Reference |
45-47 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
48 | D-BU/WH | 878 | Fuel Injector 8 Control |
49 | BK/WH | 845 | Fuel Injector 5 Control |
50-51 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
52 | YE/BK | 846 | Fuel Injector 6 Control |
53 | RD/WH | 2122 | IC 2 Control |
54 | L-BU/WH | 2126 | IC 6 Control |
55 | L-BU | 2123 | IC 3 Control |
56-58 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
59 | PK/BK | 632 | CMP Sensor Signal (Early Production) |
BN/WH | 633 | CMP Sensor Signal (Late Production) | |
60 | TN/WH | 332 | Oil Pressure Sensor Signal |
61 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
62 | TN | 472 | IAT Sensor Signal |
63 | YE/BK | 1868 | CKP Sensor Signal (Early Production) |
D-BU/WH | 1869 | CKP Sensor Signal (Late Production) | |
64 | D-GN | 485 | TP Sensor 1 Signal |
65 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
66 | PU | 486 | TP Sensor 2 Signal |
67 | YE | 492 | MAF Sensor Signal |
68 | BK/WH | 3113 | HO2S Heater Low Control - Bank 1 Sensor 1 |
69 | BN | 2391 | HO2S Heater Low Control - Bank 1 Sensor 2 |
70 | L-BU/BK | 844 | Fuel Injector 4 Control |
71 | RD/BK | 877 | Fuel Injector 7 Control |
72 | BK | 1744 | Fuel Injector 1 Control |
73 | BK | 450 | Ground |
Engine Control Module (ECM) C3
Connector Part Information
|
Terminal Part Information
|
Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
1-2 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
3 | TN | 1667 | HO2S Low Signal - Bank 2 Sensor 1 |
4 | PU | 1666 | HO2S High Signal - Bank 2 Sensor 1 |
5 | PU | 1670 | HO2S High Signal - Bank 2 Sensor 2 |
6 | TN | 1671 | HO2S Low Signal - Bank 2 Sensor 2 |
7 | PU | 5428 | Generator Regulator Control |
8-9 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
10 | GY | 5493 | Cylinder 6 Shutoff Solenoid Control 3 |
11 | D-BU | 5491 | Cylinder 1 Shutoff Solenoid Control 1 |
12 | TN/BK | 464 | Delivered Torque Signal |
13-14 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
15 | L-GN | 3212 | HO2S Heater Low Control - Bank 2 Sensor 1 |
16 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
17 | OG/BK | 463 | Requested Torque Signal |
18-20 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
21 | BK | 2751 | Low Reference |
22 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
23 | OG/BK | 469 | Low Reference |
24-27 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
28 | GY | 2365 | Low Reference |
29 | GY | 23 | Generator Field Duty Cycle Signal |
30-32 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
33 | TN | 2501 | High Speed GMLAN Serial Data Bus - |
34 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
35 | BK | 2761 | Low Reference |
36 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
37 | GY | 2700 | 5-Volt Reference |
38 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
39 | GY | 2704 | 5-Volt Reference |
40-43 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
44 | GY | 597 | 5-Volt Reference |
45-46 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
47 | OG/BK | 1786 | PNP Switch Signal |
48 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
49 | WH/BK | 2366 | Cooling Fan Clutch Control |
50 | RD/WH | 3223 | HO2S Heater Low Control - Bank 2 Sensor 2 |
51-52 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
53 | TN/WH | 2500 | High Speed GMLAN Serial Data Bus + |
54 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
55 | YE | 410 | ECT Sensor Signal |
56 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
57 | RD/BK | 380 | A/C Refrigerant Pressure Sensor |
58 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
59 | L-GN | 432 | MAP Sensor Signal |
60-63 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
64 | D-BU | 2364 | Cooling Fan Speed Signal |
65 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
66 | YE | 400 | Signal High - Front |
67 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
68 | L-GN | 5492 | Cylinder 7 Shutoff Solenoid Control 4 |
69 | OG | 5494 | Cylinder 4 Shutoff Solenoid Control 2 |
70-72 | -- | -- | Not Used (Early Production) |
-- | -- | Not Available (Late Production) | |
73 | -- | -- | Not Used |
