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HOMESERVICE MANUALSCHEVROLET2010MALIBU LT, 3.6 7REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 948 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - E29RF THROUGH K33)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X2 (LF1)
2010 Chevrolet Malibu LT, 3.6 7

K20 Engine Control Module X2 (LF1)

2010 Chevrolet Malibu LT, 3.6 7SECTION K20 Engine Control Module X2 (LF1)
WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: K20 Engine Control Module X2 (LF1) Connector End View
GM1968294Courtesy of GENERAL MOTORS CORP.
K20 Engine Control Module X2 (LF1)

Pin Wire Circuit Function
1-2 - - Not Used
3 0.5 TN 808 Low Reference
4-9 - - Not Used
10 0.5 PU/WH 3110 HO2S Reference Voltage (Bank 1 Sensor 1)
11 0.5 PU/WH 3210 GMX215 HO2S Reference Voltage (Bank 2 Sensor 1)
12 0.5 PU 3120 HO2S High Signal (Bank 1 Sensor 2)
13 0.5 PU 3220 GMX215 HO2S High Signal (Bank 2 Sensor 2)
14 0.5 GY 2093 5-Volt Reference 2
15 - - Not Used
16 0.5 BN 582 TAC Motor Control - 2
17 - - Not Used
18 0.5 GY 598 5-Volt Reference 1
19 0.5 YE 2918 FRP Sensor Signal
20-25 - - Not Used
26 0.5 TN/WH 3111 HO2S Low Reference (Bank 1 Sensor 1)
27 0.5 TN/WH 3211 GMX215 HO2S Low Reference (Bank 2 Sensor 1)
28 0.5 TN/WH 3121 HO2S Low Signal (Bank 1 Sensor 2)
29 0.5 TN 3221 GMX215 HO2S Low Signal (Bank 2 Sensor 2)
30-31 - - Not Used
32 0.5 YE 581 TAC Motor Control - 1
33 0.5 D-GN 485 TP Sensor 1 Signal
34 0.5 GY 2701 5-Volt Reference 4
35 0.5 PU 486 TP Sensor 2 Signal
36 0.5 D-BU 496 Knock Sensor (KS) 1 Signal
37 0.5 L-BU 1876 Knock Sensor (KS) 2 Signal
38-40 - - Not Used
41 0.5 GY/WH 3113 HO2S Heater Low Control (Bank 1 Sensor 1)
42 0.5 GY/WH 3122 HO2S Heater Low Control (Bank 2 Sensor 1)
43 0.5 L-GN 432 MAP Sensor Signal
44 0.5 GY 2704 5-Volt Reference 1
45-48 - - Not Used
49 0.5 L-BU 6289 Intake Air Temperature Sensor Signal
50 0.5 PK/WH 2092 Brake Booster Vacuum Sensor Signal
51 0.5 D-GN/WH 428 EVAP Canister Purge Solenoid Control
52 0.5 YE 492 MAF Sensor Signal
53 0.5 BN 25 Charge Indicator Control/Charge Indicator Signal
54 0.5 TN 2752 Low Reference
55 0.5 GY 23 Generator Field Duty Cycle Signal
56 0.5 GY 1716 Knock Sensor (KS) 1 Signal
57 0.5 GY 2303 Knock Sensor (KS) 2 Signal
58 0.5 OG/BK 1786 Park/Neutral Signal
59-60 - - Not Used
61 0.5 L-GN 3212 HO2S Heater Low Control (Bank 2 Sensor 1)
62 0.5 OG/WH 3223 GMX215, GMX320 HO2S Heater Low Control (Bank 2 Sensor 2)
63 0.5 OG/BK 469 Low Reference
64-68 - - Not Used
69 0.5 TN 2760 Low Reference
70-72 - - Not Used
73 2 BK/WH 451 Ground
Connector Part Information 
  • Harness Type: Engine
  • OEM Connector: 13756653
  • Service Connector: 13574947
  • Description: 73-Way F MX123 34566 Series (BK with BK Insert)
Terminal Part Information 
  • Pins: 3-69
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 1326030-8/17
  • Core/Insulation Crimp: A/4
  • Release Tool/Test Probe: 12094429/J-35616-35 (VT)
RENDER: 1.0x

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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.