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HOMESERVICE MANUALSBUICK2018REGAL BASEREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (F101-K20)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X1 (LTG)
2018 Buick Regal Base

K20 Engine Control Module X1 (LTG)

2018 Buick Regal BaseSECTION K20 Engine Control Module X1 (LTG)
GM2889071
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 19167545
  • Service Connector: 19167545
  • Description: 73-Way F 0.64, 2.8 Series, Sealed (BK with BU 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 - 4 - - - Not Occupied - -
5 0.35 BU/BN 4498 High Speed GMLAN Serial Data (+) 7 III LTG
6 0.35 WH 4499 High Speed GMLAN Serial Data (-) 7 III LTG
7 0.5 WH 7494 High Speed GMLAN Serial Data (-)3 II -
8 0.5 BU/BK 7493 High Speed GMLAN Serial Data (+)3 II -
9 0.5 BU 2500 High Speed GMLAN Serial Data (+) 1 II -
10 0.5 WH 2501 High Speed GMLAN Serial Data (-) 1 II -
11 0.35 BN/RD 1274 Accelerator Pedal Position 5V Reference 2 III LTG
12 0.35 WH/RD 1164 Accelerator Pedal Position 5V Reference 1 III LTG
13 0.5 VT/YE 5985 Accessory Wakeup Serial Data II LTG
14 0.5 VT/GN 439 Run/Crank Ignition 1 Voltage II LTG
15 0.5 RD/WH 140 Battery Positive Voltage II LTG
16 0.75 VT/BU 5292 Powertrain Main Relay Fused Supply 3 II LTG
17 0.5 YE 5530 Hood Open Switch Signal II LTG
18 0.5 GY/RD 3053 Turbo Intake Pressure Sensor High Reference Bank 1 II LTG
19 - 22 - - - Not Occupied - -
23 0.5 BK/GY 3927 IMS Mode Switch Low Reference II LTG+(M3D/M3T)
24 - - - Not Occupied - -
25 0.35 BK/YE 5382 Brake Position Sensor Low Reference III LTG
26 - - - Not Occupied - -
27 0.35 BK/VT 1272 Accelerator Pedal Position Low Reference 2 III LTG
28 0.35 BK/BU 1271 Accelerator Pedal Position Low Reference 1 III LTG
29 - 31 - - - Not Occupied - -
32 0.35 YE/VT 6030 Brake Vacuum Sensor Signal III LTG
33 0.35 GN/WH 1162 Accelerator Pedal Position Signal 2 III LTG
34 0.5 GN/WH 492 Mass Air Flow Sensor Signal II LTG
35 - 36 - - - Not Occupied - -
37 0.35 BN/RD 2700 A/C Pressure Sensor 5V Reference III LTG
38 - - - Not Occupied - -
39 0.5 YE/BU 4171 Transmission Position Sensor A 9V Reference II LTG+(M3D/M3T)
40 - - - Not Occupied - -
41 0.35 WH/RD 5381 Brake Position Sensor 5V Reference III LTG
42 - 43 - - - Not Occupied - -
44 0.35 YE/VT 4325 Starter Pinion Solenoid Relay Control III LTG
45 0.35 YE/WH 1161 Accelerator Pedal Position Signal 1 III LTG
46 - - - Not Occupied - -
47 0.5 BU/GY 636 Outside Ambient Air Temperature Sensor Signal II LTG
48 0.5 WH/BU 6289 Induction Air Temperature Sensor Signal II LTG
49 0.5 WH/GY 1786 Transmission Park/Neutral Signal 1 II LTG+MRC
50 0.35 WH/BU 6311 Cruise/ETC/TCC Brake Signal III LTG
51 0.5 VT/BU 5291 Powertrain Main Relay Fused Supply 2 II LTG
52 0.35 WH 2368 Cooling Fan Control Signal III LTG
53 - - - Not Occupied - -
54 0.35 WH/GY 459 A/C Compressor Clutch Relay Control III LTG
55 - 56 - - - Not Occupied - -
57 0.35 GN 380 A/C Refrigerant Pressure Sensor Signal III LTG
58 - - - Not Occupied - -
59 0.5 WH/BU 5726 Ignition Mode Switch Mode Control Backup II LTG+(M3D/M3T)
60 0.5 BN/GY 4008 Humidity Sensor Signal II LTG
61 0.35 WH/GN 5380 Brake Position Sensor Signal III LTG
62 - 63 - - - Not Occupied - -
64 0.35 GN/GY 465 Fuel Pump Primary Relay Control III LTG
65 - - - Not Occupied - -
66 0.35 GY 5127 After Boil Heater Relay Control III LTG
67 0.35 YE 5991 Powertrain Relay Coil Control III LTG
68 - 69 - - - Not Occupied - -
70 0.35 YE/BK 625 Starter Enable Relay Control III LTG
71 0.35 BN/WH 419 Check Engine Indicator Control III LTG
72 - - - Not Occupied - -
73 2.5 VT/BU 5290 Powertrain Main Relay Fused Supply 1 I LTG
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.