For 1990-2009 cars

Connector 1: | Engine Control Module (ECM) C1
Connector 2: | Engine Control Module (ECM) C2

### Engine Control Module (ECM) C1

#### Connector Part Information

- OEM: 1928404927
- Service: See Catalog
- Description: 96-Way F 1.2 Series Sealed (BK)

#### Terminal Part Information

- Terminal/Tray: 1928498135/19
- Core/Insulation Crimp: J/J
- Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

#### Engine Control Module (ECM) C1

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | L-GN | 5282 | Camshaft Phaser Exhaust Solenoid (1)
2 | PU | 5284 | Camshaft Phaser Intake Solenoid (1)
3 | -- | -- | Not Used
4 | YE/BK | 846 | Fuel Injector 6 Control
5 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control
6 | -- | -- | Not Used
7 | OG | 5275 | Camshaft Position Intake Sensor (1)
8 | -- | -- | Not Used
9 | PU | 5274 | Camshaft Position Exhaust Sensor (2)
10 | OG | 225 | Generator Turn On Signal
11-12 | -- | -- | Not Used
13 | BN/WH | 2130 | Low Reference
14 | -- | -- | Not Used
15 | GY | 705 | 5-Volt Reference
16 | -- | -- | Not Used
17 | TN/BK | 231 | Oil Pressure Switch Signal
18-23 | -- | -- | Not Used
24 | YE | 581 | TAC Motor Control - 1
25 | WH/BK | 5283 | Camshaft Phaser Exhaust Solenoid (2)
26 | PK/BK | 1746 | Fuel Injector 3 Control
27 | -- | -- | Not Used
28 | TN/WH | 845 | Fuel Injector 5 Control
29 | -- | -- | Not Used
30 | GY | 23 | Generator Field Duty Cycle Signal
31-32 | -- | -- | Not Used
33 | YE | 5276 | Camshaft Position Intake Sensor (2)
34 | D-GN | 5273 | Camshaft Position Exhaust Sensor (1)
35 | YE | 573 | CKP Sensor [1] Signal
36-38 | -- | -- | Not Used
39 | GY | 2701 | 5-Volt Reference
40 | -- | -- | Not Used
41 | TN | 552 | Low Reference
42 | -- | -- | Not Used
43 | TN | 470 | Low Reference
44 | TN | 2761 | Low Reference
45 | GY | 605 | 5-Volt Reference.
46 | TN | 452 | Low Reference
47 | -- | -- | Not Used
48 | BN | 582 | TAC Motor Control - 2
49 | OG/BK | 5272 | Camshaft Phaser Intake Solenoid (2)
50 | L-BU/BK | 844 | Fuel Injector 4 Control
51 | TN | 1744 | Fuel Injector 1 Control
52 | L-GN/BK | 1745 | Fuel Injector 2 Control
53-54 | -- | -- | Not Used
55 | PU | 2121 | Ignition Control 1
56 | L-BU | 2123 | Ignition Control 3
57 | D-GN | 2125 | Ignition Control 5
58 | -- | -- | Not Used
59 | D-BU | 496 | KS 1 Signal
60 | GY | 2303 | KS 2 Signal
61-66 | -- | -- | Not Used
67 | TN | 1664 | HO2S Low Signal [- Bank 1 Sensor 1]
68-69 | -- | -- | Not Used
70 | PU | 1666 | HO2S High Signal [- Bank 2 Sensor 1]
71 | -- | -- | Not Used
72 | L-GN | 3212 | HO2S Heater Low Control - Bank 2 Sensor 1
73-77 | -- | -- | Not Used
78 | BN | 2129 | Low Reference
79 | OG/WH | 2122 | Ignition Control 2
80 | D-GN/WH | 2124 | Ignition Control 4
81 | L-BU/WH | 2126 | Ignition Control 6
82 | YE | 410 | ECT Sensor Signal
83 | GY | 1716 | KS 1 Signal
84 | L-BU | 1876 | KS 2 Signal
85-87 | -- | -- | Not Used
88 | TN | 2752 | Low Reference
89 | PU | 486 | TP Sensor 2 Signal
90 | D-GN | 485 | TP Sensor 1 Signal
91 | -- | -- | Not Used
92 | PU/WH | 1665 | HO2S High Signal [- Bank 1 Sensor 1]
93 | TN | 1667 | HO2S Low Signal [- Bank 2 Sensor 1]
94-95 | -- | -- | Not Used
96 | GY/WH | 3113 | HO2S Heater Low Control - Bank 1 Sensor 1

### Engine Control Module (ECM) C2

#### Connector Part Information

- OEM: 1928404916
- Service: 19115599
- Description: 58-Way F 2.8 Series Sealed (BK)

#### Terminal Part Information

- Pins: 1, 2, 4, 5
- Terminal/Tray: 1928498058/8
- Core/Insulation Crimp: E/1
- Release Tool/Test Probe: J-38125-561/J-35616- 4A (PU)

- Pins: 7, 9, 10, 11, 12, 13, 14, 15, 17, 19, 20, 22, 23, 24, 25, 27, 34, 35, 36, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58
- Terminal/Tray: 1928498135/19
- Core/Insulation Crimp: J/J
- Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

#### Engine Control Module (ECM) C2

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | BK/WH | 451 | Ground
2 | BK/WH | 451 | Ground
3 | -- | -- | Not Used
4 | BK/WH | 451 | Ground
5 | PK/BK | 5290 | Ignition 1 Voltage
6 | -- | -- | Not Used
7 | GY/WH | 3122 | HO2S Heater Low Control [- Bank 2 Sensor 1]
8 | -- | -- | Not Used
9 | TN | 2759 | Low Reference
10 | D-GN/WH | 465 | Fuel Pump Relay Control [- Primary]
11 | TN | 5514 | Low Reference
12 | BN/WH | 419 | MIL Control
13 | YE | 492 | MAF Sensor Signal
14 | GY | 2709 | 5-Volt Reference
15 | D-BU | 1161 | APP Sensor 1 Signal
16 | -- | -- | Not Used
17 | OG/BK | 1786 | Park/Neutral Signal
18 | -- | -- | Not Used
19 | WH | 1310 | EVAP Canister Vent Solenoid Control
20 | OG/WH | 3223 | Heated Oxygen Sensor Heater Low Control Bank 2 Sensor (2)
21 | -- | -- | Not Used
22 | TN | 2760 | Low Reference
23 | TN/WH | 1669 | HO2S Low Signal [- Bank 1 Sensor 2]
24 | TN | 1671 | HO2S Low Signal [- Bank 2 Sensor 2]
25 | L-BU | 1162 | APP Sensor 2 Signal
26 | -- | -- | Not Used
27 | D-GN | 890 | Fuel Tank Pressure Sensor Signal
28-33 | -- | -- | Not Used
34 | BN | 1271 | Low Reference
35 | GY | 2700 | 5-Volt Reference
36 | PU | 1589 | Fuel Level Sensor Signal [- Primary]
37 | -- | -- | Not Used
38 | PU/WH | 1668 | HO2S High Signal [- Bank 1 Sensor 2]
39 | OG/BK | 380 | A/C Refrigerant Pressure Sensor Signal
40 | -- | -- | Not Used
41 | BN | 4 | Accessory Voltage
42 | TN/BK | 2500 | High Speed GMLAN Serial Data Bus+
43 | -- | -- | Not Used
44 | D-GN/WH | 459 | A/C Compressor Clutch Relay Control
45 | D-BU | 473 | High Speed Cooling Fan Relay Control
46 | D-GN | 335 | Low Speed Cooling Fan Relay Control
47 | PU | 1272 | Low Reference
48 | TN | 1274 | 5-Volt Reference
49 | WH/BK | 1164 | 5-Volt Reference
50 | TN | 472 | IAT Sensor Signal
51 | PU | 1670 | HO2S High Signal [- Bank 2 Sensor 2]
52 | WH | 17 | Stop Lamp Switch Signal
53 | -- | -- | Not Used
54 | PK | 439 | Ignition 1 Voltage
55 | TN | 2501 | High Speed GMLAN Serial Data Bus-
56 | RD/WH | 1540 | Battery Positive Voltage
57 | YE | 447 | Starter Relay Coil Control
58 | BN | 5069 | Engine Main Relay Coil Control