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HOMESERVICE MANUALSCHEVROLET2006IMPALA LTZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (ENGINE CONTROL SYSTEM - 5.3L - INTRODUCTION (2 OF 2))VISUAL IDENTIFICATIONENGINE CONTROL MODULE (ECM) CONNECTORSENGINE CONTROL MODULE (ECM) C2
2006 Chevrolet Impala LTZ

Engine Control Module (ECM) C2

2006 Chevrolet Impala LTZSECTION Engine Control Module (ECM) C2
WARNING: This page is about a different variant/trim than selected.
Fig 1: Connector End Views
GM1581643Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) Connector End Views

Connector Part Information 
  • OEM: 13551267
  • Service: 88953274
  • Description: 73-Way F GT 280 Micro-Pack 0.64 Series, Sealed (BK)
Terminal Part Information 
  • Pins: 2 - 72
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64A (L-BU)
  • Pins: 73
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Engine Control Module (ECM) C2

Pin Wire Color Circuit No. Function
1 - - Not Used
2 GY 3113 HO2S Heater Low Control [- Bank 1 Sensor 1]
3 - - Not Used
4 D-BU/WH 878 Fuel Injector 8 Control
5 TN 1744 Fuel Injector 1 Control
6 L-GN/BK 1745 Fuel Injector 2 Control
7 OG/BK 877 Fuel Injector 7 Control
8 L-BU/BK 844 Fuel Injector 4 Control
9 PK/BK 1746 Fuel Injector 3 Control
10 TN/WH 845 Fuel Injector 5 Control
11-12 - - Not Used
13 YE/BK 846 Fuel Injector 6 Control
14 YE/BK 1868 Low Reference
15 PK/BK 632 Low Reference
16 BN 2129 Low Reference
17 OG 5494 Cylinder Shutoff Solenoid Control 4
18 TN 5496 Cylinder Shutoff Solenoid Control 3
19 - - Not Used
20 OG/BK 469 Low Reference
21 BK 2755 Low Reference
22 YE 447 Starter Relay Coil Control
23 - - Not Used
24 TN/WH 331 Oil Pressure Sensor Signal
25 - - Not Used
26 BN/WH 633 CMP Sensor Signal
27 BN 1174 Oil Level Switch Signal
28 - - Not Used
29 PU 486 TP Sensor 2 Signal
30 - - Not Used
31 D-GN 485 TP Sensor 1 Signal
32 - - Not Used
33 D-BU 5491 Cylinder Shutoff Solenoid Control 1
34 WH 5497 Cylinder Shutoff Solenoid Control 2
35 GY 2704 5-Volt Reference
36 TN 2752 Low Reference
37 GY 2705 5-Volt Reference
38 - - Not Used
39 L-BU/BK 6297 Low Reference
40 L-BU 6295 5-Volt Reference 2
41 GY 2701 5-Volt Reference
42 - - Not Used
43 L-GN 1867 12-Volt Reference
44 OG 631 12-Volt Reference
45 GY 23 Generator Field Duty Cycle Signal
46 L-GN 432 MAP Sensor Signal
47 - - Not Used
48 PU/WH 1665 HO2S High Signal [- Bank 1 Sensor 1]
49 TN 1664 HO2S Low Signal [- Bank 1 Sensor 1]
50 D-GN/WH 428 EVAP Canister Purge Solenoid Control
51 - - Not Used
52 TN 2761 Low Reference
53 OG 2127 IC 7 Control
54 PU 2121 IC 1 Control
55 YE 410 ECT Sensor Signal
56 OG 225 Generator Turn On Signal
57 L-BU/WH 2126 IC 6 Control
58 D-GN/WH 2124 IC 4 Control
59 D-GN 2125 IC 5 Control
60 BN 582 TAC Motor Control - 2
61 L-BU 2123 IC 3 Control
62 D-BU/WH 1869 CKP Sensor Signal
63 YE 581 TAC Motor Control - 1
64 BN/WH 2130 Low Reference
65 PU/WH 2128 IC 8 Control
66 OG/WH 2122 IC 2 Control
67 - - Not Used
68 D-BU 496 Knock Sensor [1] Signal
69 GY 1716 Low Reference
70 - - Not Used
71 GY 2303 Low Reference
72 L-BU 1876 Knock Sensor 2 Signal
73 BK/WH 451 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.