2006 Chevrolet Impala SSFACTORY OEM SERVICE PROCEDURE

Engine Control Module (ECM) C3

Fig 1: Connector End Views
GM1581642Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) Connector End Views

Connector Part Information 
  • OEM: 13551265
  • Service: 88953347
  • Description: 56-Way F Micro-Pack 0.64 Series, Sealed (GY)
Terminal Part Information 
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64A (L-BU)
Engine Control Module (ECM) C3

Pin Wire Color Circuit No. Function
1 - - Not Used
2 BN 2391 HO2S Heater Low Control [- Bank 1 Sensor 2]
3-5 - - Not Used
6 OG 6030 Brake Booster Vacuum Signal
7-10 - - Not Used
11 YE 492 MAF Sensor Signal
12-14 - - Not Used
15 GY 6031 5-Volt Reference 1
16-17 - - Not Used
18 TN/WH 1669 HO2S Low Signal [- Bank 1 Sensor X]
19 PU/WH 1668 HO2S High Signal [- Bank 1 Sensor X]
20-21 - - Not Used
22 OG/BK 1786 Park/Neutral Signal
23 - - Not Used
24 TN 2760 Low Reference
25-33 - - Not Used
34 TN 472 IAT Sensor Signal
36 YE/BK 6032 Low Reference
37-44 - - Not Used
45 OG 381 Vehicle Speed Signal
46-48 - - Not Used
49 TN 2759 Low Reference
50 - - Not Used
51 D-GN/WH 459 A/C Compressor Clutch Relay Control
52-56 - - Not Used
Factory Service Tools

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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.

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