K20 Engine Control Module X2 (L8T)
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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Connector Part Information
- Harness Type: Engine Wiring Harness
- OEM Connector: 15499466
- Service Connector: 19333090
- Description: 73-Way F 0.64, 2.8 Series, Sealed (BK with BK Terminal Position Assurance)
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Terminal Part Information
| Terminal Type ID |
Terminated Lead |
Diagnostic Test Probe |
Terminal Removal Tool |
| I |
13587518 |
J-35616-35 (VT) |
J-38125-11A |
| II |
19354746 |
J-35616-64B (L-BU) |
J-38125-215A |
| Pin |
Size |
Color |
Circuit |
Function |
Terminal Type ID |
Option |
| 1 |
0.5 |
GN/YE |
3212 |
HO2S Heater Low Control Bank 2 Sensor 1 |
II |
- |
| 2 |
- |
- |
- |
Not Occupied |
- |
- |
| 3 |
0.5 |
BK/YE |
548 |
Engine Control Sensors Low Reference 1 |
II |
- |
| 4 - 6 |
- |
- |
- |
Not Occupied |
- |
- |
| 7 |
0.5 |
GN/WH |
4622 |
Engine Control Module LIN Bus 2 |
II |
- |
| 8 |
0.5 |
GN/VT |
4621 |
Engine Control Module LIN Bus 1 |
II |
- |
| 9 |
- |
- |
- |
Not Occupied |
- |
- |
| 10 |
0.5 |
VT/GY |
3110 |
HO2S High Signal Bank 1 Sensor 1 |
II |
- |
| 11 |
0.5 |
WH/BK |
3111 |
HO2S Low Signal Bank 1 Sensor 1 |
II |
- |
| 12 |
0.5 |
YE/BU |
2124 |
Ignition Control 4 |
II |
- |
| 13 |
0.5 |
BN/BU |
2126 |
Ignition Control 6 |
II |
- |
| 14 - 15 |
- |
- |
- |
Not Occupied |
- |
- |
| 16 |
0.75 |
VT/BU |
5290 |
Powertrain Main Relay Fused Supply Voltage 1 |
II |
- |
| 17 |
0.5 |
GY/WH |
3113 |
HO2S Heater Low Control Bank 1 Sensor 1 |
II |
- |
| 18 - 20 |
- |
- |
- |
Not Occupied |
- |
- |
| 21 |
0.5 |
WH/BN |
2203 |
Enhanced Driver Mode 2 Switch Signal |
II |
- |
| 22 - 25 |
- |
- |
- |
Not Occupied |
- |
- |
| 26 |
0.5 |
VT/WH |
3210 |
HO2S High Signal Bank 2 Sensor 1 |
II |
- |
| 27 |
0.5 |
YE/WH |
3211 |
HO2S Low Signal Bank 2 Sensor 1 |
II |
- |
| 28 |
0.5 |
GN/BU |
2123 |
Ignition Control 3 |
II |
- |
| 29 |
0.5 |
BU/GY |
2125 |
Ignition Control 5 |
II |
- |
| 30 |
0.5 |
BK/GY |
2130 |
Ignition Control Low Reference Bank 2 |
II |
- |
| 31 - 32 |
- |
- |
- |
Not Occupied |
- |
- |
| 33 |
0.5 |
WH/BN |
3223 |
HO2S Heater Low Control Bank 2 Sensor 2 |
II |
- |
| 34 |
- |
- |
- |
Not Occupied |
- |
- |
| 35 |
0.5 |
BU |
179 |
Engine Oil Pump Control |
II |
- |
| 36 |
- |
- |
- |
Not Occupied |
- |
- |
| 37 |
0.75 |
VT/BU |
5294 |
Powertrain Main Relay Fused Supply Voltage 5 |
II |
- |
| 38 |
- |
- |
- |
Not Occupied |
- |
- |
| 39 |
0.5 |
WH/RD |
480 |
Engine Control Vehicle Sensors 5 Volt Reference 1 |
II |
- |
| 40 - 45 |
- |
- |
- |
Not Occupied |
- |
- |
| 46 |
0.5 |
YE/BU |
3221 |
HO2S Low Signal Bank 2 Sensor 2 |
II |
- |
| 47 |
0.5 |
VT/GN |
3220 |
HO2S High Signal Bank 2 Sensor 2 |
II |
- |
| 48 - 49 |
- |
- |
- |
Not Occupied |
- |
- |
| 50 |
0.75 |
BK/GY |
2303 |
Knock Sensor Low Reference 2 |
II |
- |
| 51 |
0.75 |
BK/YE |
1716 |
Knock Sensor Low Reference 1 |
II |
- |
| 52 |
0.5 |
BN/WH |
582 |
Throttle Actuator Close Control |
II |
- |
| 53 |
0.5 |
GY/WH |
3122 |
HO2S Heater Low Control Bank 1 Sensor 2 |
II |
- |
| 54 - 58 |
- |
- |
- |
Not Occupied |
- |
- |
| 59 |
0.5 |
BU/RD |
460 |
Engine Control Sensors 5 Volt Reference 1 |
II |
- |
| 60 - 65 |
- |
- |
- |
Not Occupied |
- |
- |
| 66 |
0.5 |
WH/YE |
3121 |
HO2S Low Signal Bank 1 Sensor 2 |
II |
- |
| 67 |
0.5 |
VT/BU |
3120 |
HO2S High Signal Bank 1 Sensor 2 |
II |
- |
| 68 - 69 |
- |
- |
- |
Not Occupied |
- |
- |
| 70 |
0.75 |
WH/GY |
1876 |
Knock Sensor 2 Signal |
II |
- |
| 71 |
0.75 |
VT/GY |
496 |
Knock Sensor 1 Signal |
II |
- |
| 72 |
0.5 |
YE |
581 |
Throttle Actuator Open Control |
II |
- |
| 73 |
2.5 |
BK/WH |
451 |
Signal Ground |
I |
- |