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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 239 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - G14 THROUGH K71 TCM X2)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X3 (LHU)
2013 Buick Regal Turbo Premium, Standard Trans

K20 Engine Control Module X3 (LHU)

2013 Buick Regal Turbo Premium, Standard TransSECTION K20 Engine Control Module X3 (LHU)
WARNING: This page is about a different car, the 2012 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
GM1590596
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 12582678
  • Service Connector: 88988372
  • Description: 73-Way F 0.64 2.8 Series, Sealed (BK with GY Terminal Position Assurance Lock)
 Terminal Part Information
  • Pins: 8-10, 16, 24-35, 39-40, 53-55, 59-60
  • Terminated Lead: Pending
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Pins: 46, 48, 50, 52, 66, 68, 70, 72
  • Terminated Lead: Pending
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: K/K
  • Pin: 73
  • Terminated Lead: 13576392
  • Release Tool: J-38125-11A
  • Diagnostic Test Probe: J-35616-35 (VT)
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: A/5
K20 Engine Control Module X3 (LHU)

Pin Size Color Circuit Function Option
1-7 - - - Not Used -
8 0.5 YE/VT 410 Engine Coolant Temperature Sensor Signal -
9 0.5 WH/BK 231 Oil Pressure Switch Signal -
10 0.5 VT/WH 6270 5-Volt Reference 2 -
11-15 - - - Not Used -
16 0.5 YE 7301 High Pressure Fuel Pump Actuator High Control -
17-23 - - - Not Used -
24 0.5 GY/RD 2761 Low Reference -
25 0.5 GY/BK 6272 Low Reference -
26 0.5 WH/BK 6271 Crankshaft Sensor Signal (1) -
27 0.5 OG/WH 2122 Ignition Control (2) -
28 0.5 GN/WH 2124 Ignition Control (4) -
29 0.5 BU 2123 Ignition Control (3) -
30 0.5 VT 2121 Ignition Control (1) -
31 0.5 BN 2129 Low Reference -
32 0.5 VT 7300 High Pressure Fuel Pump Actuator Low Control -
33 0.5 OG 5275 Camshaft Position Intake Sensor (1) -
34 0.5 BU 5300 5-Volt Reference 1 -
35 0.5 GN 5273 Camshaft Position Exhaust Sensor (1)  
36-38 - - - Not Used -
39 0.5 VT 5284 Camshaft Phaser Intake Solenoid (1) -
40 0.5 GN 5282 Camshaft Phaser Exhaust Solenoid (1) -
41-45 - - - Not Used -
46 0.75 BU 4802 Direct Fuel Injector (DFI) High Voltage Control Cylinder 2 -
47 - - - Not Used -
48 0.75 GN 4803 Direct Fuel Injector (DFI) High Voltage Control Cylinder 3 -
49 - - - Not Used -
50 0.75 BU 4804 Direct Fuel Injector (DFI) High Voltage Control Cylinder 4 -
51 - - - Not Used -
52 0.75 BN 4801 Direct Fuel Injector (DFI) High Voltage Control Cylinder 1 -
53 0.5 WH 5301 Low Reference -
54 0.5 YE/BK 5297 5-Volt Reference 1 -
55 0.5 GY 5296 Low Reference -
56-58 - - - Not Used -
59 0.5 BN 6753 Low Reference -
60 0.5 BN/WH 6754 Low Reference -
61-65 - - - Not Used -
66 0.75 BU/WH 4902 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 2 -
67 - - - Not Used -
68 0.75 GN/WH 4903 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3 -
69 - - - Not Used -
70 0.75 BU/WH 4904 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4 -
71 - - - Not Used -
72 0.75 BN/WH 4901 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1 -
73 2.5 BK/WH 151 Ground -
RENDER: 1.0x

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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.