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HOMESERVICE MANUALSBUICK2018REGAL BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (F101-K20)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X3 (LGX)
2018 Buick Regal Base

K20 Engine Control Module X3 (LGX)

2018 Buick Regal BaseSECTION K20 Engine Control Module X3 (LGX)
GM2533189
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 19167543
  • Service Connector: 19167543
  • Description: 73-Way F 0.64, 2.8 Series, Sealed (BK with GY Terminal Position Assurance)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Name Core Crimp Insulation Crimp
I 19355728 J-35616-35 (VT) J-38125-215A Not Available Not Available Not Available Not Available
II 19355736 J-35616-64B (LT BU) J-38125-215A Not Available Not Available Not Available Not Available
III 19355737 J-35616-64B (LT BU) J-38125-215A Not Available Not Available Not Available Not Available
Pin Size Color Circuit Function Terminal Type ID Option
1 0.5 GN 5492 Cylinder Shutoff Solenoid Control 2 II LGX
2 0.5 BU 5491 Cylinder Shutoff Solenoid Control 1 II LGX
3 0.5 GN/BN 5298 Camshaft Position Exhaust Sensor Control 2 II LGX
4 0.5 YE 5276 Camshaft Position Intake Sensor 2 II LGX
5 0.5 WH/BU 5302 Camshaft Position Intake Sensor Control 2 II LGX
6 0.5 VT/BU 6270 Crankshaft 60X Sensor 5V Reference II LGX
7 0.5 GN 6271 Crankshaft 60X Sensor Signal II LGX
8 0.5 BN/RD 2701 Throttle Position Sensor 5V Reference II LGX
9 0.5 VT/BU 6091 Crankshaft Position Sensor Replicated Signal II LGX
10 0.5 GN/BU 3889 DEF Power Module Relay Control II LGX
11 - - - Not Occupied - -
12 0.5 BN/BU 2126 Ignition Control 6 II LGX
13 0.5 BU/GY 2125 Ignition Control 5 II LGX
14 0.5 YE/BU 2124 Ignition Control 4 II LGX
15 0.5 BK/GY 2130 Ignition Control Low Reference Bank 2 II LGX
16 0.5 YE 7301 High Pressure Fuel Pump Actuator High - Control II LGX
17 0.5 GY/GN 908 - II LGX
18 0.5 YE/GN 4321 Park Phaser Lock Control II LGX
19 0.5 BK/BN 5299 Camshaft Position Exhaust Sensor Low Reference 2 II LGX
20 0.5 VT/BU 5274 Camshaft Position Exhaust Sensor 2 II LGX
21 0.5 BK/VT 5303 Camshaft Position Intake Sensor Low Reference 2 II LGX
22 0.5 BK/VT 6272 Crankshaft 60X Sensor Low Reference II LGX
23 0.5 BU/WH 3630 Throttle Position Sensor (SENT1) Signal II LGX
24 0.5 BK/BN 2752 Throttle Position Sensor Low Reference II LGX
25 - - - Not Occupied - -
26 0.5 BN 25 Charge Indicator Control II LGX
27 - - - Not Occupied - -
28 0.5 GN/BU 2123 Ignition Control 3 II LGX
29 0.5 BU/WH 2122 Ignition Control 2 II LGX
30 0.5 BU/VT 2121 Ignition Control 1 II LGX
31 0.5 BK/BU 2129 Ignition Control Low Reference Bank 1 II LGX
32 0.5 VT/BK 7300 High Pressure Fuel Pump Actuator Low - Control II LGX
33 0.5 GN/BU 428 EVAP Canister Purge Solenoid Control II LGX
34 0.5 BU 179 Oil Pump Command Signal II LGX
35 0.5 GY/YE 5297 Camshaft Position Exhaust Sensor Control 1 II LGX
36 0.5 VT/BK 5273 Camshaft Position Exhaust Sensor 1 II LGX
37 0.5 BK/GY 5296 Camshaft Position Exhaust Sensor Low Reference 1 II LGX
38 0.5 BU 410 Engine Coolant Temperature Sensor Signal II LGX
39 0.35 BN/RD 7445 Fuel Line Pressure Sensor 5V Reference III LGX
40 0.5 BN/RD 2917 Fuel Rail Pressure Sensor 5V Reference II LGX
41 0.5 BK/GN 2919 Fuel Rail Pressure Sensor Low Reference II LGX
42 - - - Not Occupied - -
43 0.5 BK/BU 6755 Cam Phaser Y Low Reference II LGX
44 0.5 GN 5272 Camshaft Phaser Intake Solenoid 2 II LGX
45 0.5 VT/BN 5284 Camshaft Phaser Intake Solenoid 1 II LGX
46 0.5 BK/BN 6753 Cam Phaser W Low Reference II LGX
47 0.75 WH/GN 4805 Direct Fuel Injector (DFI) High Voltage Control Cylinder 5 II LGX
48 0.75 BU 4802 Direct Fuel Injector (DFI) High Voltage Control Cylinder 2 II LGX
49 0.75 BN 4801 Direct Fuel Injector (DFI) High Voltage Control Cylinder 1 II LGX
50 0.75 GY/BU 4804 Direct Fuel Injector (DFI) High Voltage Control Cylinder 4 II LGX
51 0.75 VT/GN 4806 Direct Fuel Injector (DFI) High Voltage Control Cylinder 6 II LGX
52 0.75 GN 4803 Direct Fuel Injector (DFI) High Voltage Control Cylinder 3 II LGX
53 - 54 - - - Not Occupied - -
55 0.5 GY/BU 5300 Camshaft Position Intake Sensor Control 1 II LGX
56 0.5 YE/VT 5275 Camshaft Position Intake Sensor 1 II LGX
57 0.5 BK/GN 5301 Camshaft Position Intake Sensor Low Reference 1 II LGX
58 - - - Not Occupied - -
59 0.35 BU/WH 7446 Fuel Line Pressure Sensor Signal III LGX
60 0.5 BU/WH 2918 Fuel Rail Pressure Sensor Signal II LGX
61 0.5 GY 23 Generator Field Duty Cycle Signal II LGX
62 - - - Not Occupied - -
63 0.5 BK/GY 6756 Cam Phaser Z Low Reference II LGX
64 0.5 GN/BN 5283 Camshaft Phaser Exhaust Solenoid 2 II LGX
65 0.5 GY/BU 5282 Camshaft Phaser Exhaust Solenoid 1 II LGX
66 0.5 BK/VT 6754 Cam Phaser X Low Reference II LGX
67 0.75 GN/WH 4905 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 5 II LGX
68 0.75 BU/GY 4902 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 2 II LGX
69 0.75 BN/WH 4901 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1 II LGX
70 0.75 BU/WH 4904 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4 II LGX
71 0.75 VT/GY 4906 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 6 II LGX
72 0.75 GN/GY 4903 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3 II LGX
73 2.5 BK/WH 151 Signal Ground I LGX
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.