SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2012CAMARO LS, STANDARD TRANSREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - K20 X3 THROUGH X85COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X3 (LSA)
2012 Chevrolet Camaro LS, Standard Trans

K20 Engine Control Module X3 (LSA)

2012 Chevrolet Camaro LS, Standard TransSECTION K20 Engine Control Module X3 (LSA)
GM1590596Courtesy of
K20 Engine Control Module X3 (LSA)

Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 34566-0203
  • Service Connector: 88988372
  • Description: 73-Way F MX123 34566 Series (BK with GY Terminal Position Assurance Lock)
Terminal Part Information
  • Pins: 3-8, 13, 15, 16, 18, 21, 27, 29, 33, 34, 37, 43, 46, 48-50, 53, 57, 63
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Pins: 14, 45, 66, 67
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Pins: 22, 23, 35, 36, 38, 39, 55, 56, 58, 59, 65
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: K/K
  • Pins: 73
  • Terminated Lead: 13576375
  • 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 (LSA)

Pin Wire Circuit Function
1-2 - - Not Used
3 0.5 TN 1667 HO2S Low Signal - Bank 2 Sensor 1
4 0.5 PU 1666 HO2S High Signal - Bank 2 Sensor 1
5 0.5 PU 1670 HO2S High Signal - Bank 2 Sensor 2
6 0.5 TN 1671 HO2S Low Signal - Bank 2 Sensor 2
7 0.5 BN 25 Charge Indicator Control
8 0.5 OG 5494 Reverse Lockout Solenoid Signal (MG9)
9-12 - - Not Used
13 0.5 GY 587 Skip Shift Signal (MG9)
14 0.35 YE 258 Waste Gate Solenoid Control
15 0.5 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
16 0.5 PK 2014 Charge Air Cooler Coolant Pump Control
17 - - Not Used
18 0.8 D-GN/WH 357 Oil Temperature Sensor Signal
19-20 - - Not Used
21 0.35 BK/WH 2751 Signal Ground
22 0.8 OG/BK 6014 Barometric Pressure Sensor Low Reference
23 0.5 OG/BK 469 Manifold Absolute Pressure Sensor Low Reference
24-26 - - Not Used
27 0.35 WH 6110 Clutch Apply Sensor Low Reference (MG9)
Brake Apply Sensor Low Reference (MYD)
28 - - Not Used
29 0.5 GY 23 Generator Field Duty Cycle Signal
30-32 - - Not Used
33 0.5 TN 2501 High Speed GMLAN Serial Data Bus-
34 0.8 TN 470 Sensor Low Reference
35 0.5 TN 2761 Coolant Temperature Sensor Low Reference
36 0.8 YE/BK 6120 Manifold Air Temperature Sensor Low Reference
37 0.5 GY 2700 A/C Pressure Sensor 5 Volt Reference
38 0.8 WH/BK 2932 Barometric Pressure Sensor (5) Volt Reference
39 0.8 GY 2704 Manifold Absolute Pressure Sensor 5 Volt Reference
40-42 - - Not Used
43 0.5 TN 6109 Clutch Apply Sensor Voltage Reference (MG9)
Brake Apply Sensor Voltage Reference (MYD)
44 - - Not Used
45 0.35 L-GN 5007 Backup Lamp Switch Signal (MG9)
46 0.5 OG/BK 1786 Transmission Park/Neutral Signal (1)
47 - - Not Used
48 0.5 D-GN/WH 428 EVAP Canister Purge Solenoid Control
49 0.5 D-GN 335 Low Speed Cooling Fan Relay Control
50 0.5 OG/WH 3223 HO2S Heater Low Control - Bank 2 Sensor 2
51-52 - - Not Used
53 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus+
54 - - Not Used
55 0.5 YE 410 Engine Coolant Temperature Sensor Signal
56 0.8 L-BU 6118 Manifold Air Temperature Sensor Signal
57 0.5 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
58 0.8 GY/BK 433 Barometric Pressure Sensor Signal
59 0.8 L-GN 432 Manifold Absolute Pressure Sensor Signal
60-62 - - Not Used
63 0.5 YE 5380 Brake Position Sensor Signal
64 - - Not Used
65 0.8 BN 1174 Oil Level Switch Signal
66 0.5 GY/BK 6355 Output Speed High Signal Output
67 0.35 PU/WH 6356 Output Speed Low Signal
68-72 - - Not Used
73 3.0 BK 1550 Ground
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.