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Home >> Chevrolet >> 2014 >> Express 1500 LS, RWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wiring Systems And Power Management - Component Connector End Views - K17 (Except JL4) To K9 (X1) >> Component Connector End Views >> K20 Engine Control Module (ECM) X1 & X2 >> K20 Engine Control Module X1 (LU3)

K20 Engine Control Module X1 (LU3)

GM1673472
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 13580810
  • Service Connector: 88988931
  • Description: 73-Way F MX123 34566 Series (BK)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Core Crimp Insulation Crimp
I Pins: 1, 6, 8, 18, 21, 25, 27, 30, 32, 41, 47, 50, 57, 65, 67 - 13575811 J-35616-64B (L-BU) J-38125-213 Pins: 1, 6, 8, 18, 21, 25, 27, 30, 32, 41, 47, 50, 57, 65, 67 - 33467-0003 23 Pins: 1, 6, 8, 18, 21, 25, 27, 30, 32, 41, 47, 50, 57, 65, 67 - H H
II Service by Harness - See Part Catalog J-35616-35 (VT) J-38125-12A 1326030-8 17 A 4
K20 Engine Control Module X1 (LU3)

Pin Size Color Circuit Function Terminal Type ID Option
1 0.35 D-BU 1161 Accelerator Pedal Position (APP) Sensor 1 Signal I -
2 0.8 PU 1670 Heated Oxygen Sensor (HO2S) High Signal - Bank 2 Sensor 2 I -
3 0.5 D-BU 5985 Accessory Wakeup Serial Data I -
4-5 - - - Not Occupied - -
6 0.35 D-GN/WH 465 Fuel Pump Relay Control - Primary I -
7 - - - Not Occupied - -
8 0.35 TN 5514 Low Reference I C60
9 0.8 TN/WH 1669 Heated Oxygen Sensor (HO2S) Low Signal - Bank 1 Sensor 2 I -
10 0.8 TN 1671 Heated Oxygen Sensor (HO2S) Low Signal - Bank 2 Sensor 2 I -
11 0.5 BN 5360 Brake Apply Sensor Low Reference I -
12 - - - Not Occupied - -
13 0.5 YE 5991 Powertrain Relay Control I -
14 - - - Not Occupied - -
15 0.8 GY/WH 3122 Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 1 Sensor 2 I -
16 0.8 OG/WH 3223 Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 2 Sensor 2 I -
17 0.8 PU/WH 1668 Heated Oxygen Sensor (HO2S) High Signal - Bank 1 Sensor 2 I -
18 0.35 L-BU 1162 Accelerator Pedal Position (APP) Sensor 2 Signal I -
19 0.5 PK 439 Ignition Voltage I -
20 0.5 RD/WH 440 Battery Positive Voltage I -
21 0.35 PU 1272 Low Reference I -
22-23 - - - Not Occupied - -
24 0.5 TN/BK 6049 Low Reference I -
25 0.35 OG/BK 380 A/C Refrigerant Pressure Sensor Signal I C60
26 - - - Not Occupied - -
27 0.35 BN/WH 419 MIL Control I -
28-29 - - - Not Occupied - -
30 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control I C60
31 - - - Not Occupied - -
32 0.35 YE/BK 625 Starter Enable Relay Control I -
33-34 - - - Not Occupied - -
35 0.8 TN 2760 Low Reference I -
36 - - - Not Occupied - -
37 0.5 YE 492 Mass Air Flow (MAF) Sensor Signal I -
38 - - - Not Occupied - -
39 0.5 PU 1589 Fuel Level Sensor Signal - Primary I -
40 - - - Not Occupied - -
41 0.35 BN 1271 Low Reference I -
42 0.5 D-GN 890 Fuel Tank Pressure Sensor Signal I -
43 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+) I -
44 0.5 TN 2501 High Speed GMLAN Serial Data Bus (-) I -
45 0.5 WH 5359 Brake Apply Sensor Supply Voltage I -
46 - - - Not Occupied - -
47 0.35 WH/BK 1164 5-Volt Reference 2 I -
48-49 - - - Not Occupied - -
50 0.35 YE/BK 1827 Vehicle Speed Signal I -
51-53 - - - Not Occupied - -
54 0.5 OG/BK 6399 Replicated TOS Signal I -
55 0.5 L-BU/WH 6311 Torque Converter Clutch (TCC) Brake Signal I -
56 - - - Not Occupied - -
57 0.35 OG/BK 1786 Park/Neutral Signal I -
58 0.5 TN 472 Intake Air Temperature (IAT) Sensor Signal I -
59-60 - - - Not Occupied - -
61 0.5 YE 5361 Brake Apply Sensor Signal - -
62-64 - - - Not Occupied - -
65 0.35 GY 2700 5-Volt Reference 1 I C60
66 0.5 GY 2709 5-Volt Reference 1 I -
67 0.35 TN 1274 5-Volt Reference 1 I -
68-69 - - - Not Occupied - -
70 0.5 WH 1310 Evaporative Emission (EVAP) Canister Vent Solenoid Control I -
71-72 - - - Not Occupied - -
73 0.5 PK 1339 Ignition Voltage - -