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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 522 (ENGINE CONTROLS AND FUEL - 3.9L - INTRODUCTION (2 OF 2))COMPONENT LOCATORENGINE CONTROL MODULE CONNECTORSENGINE CONTROL MODULE (ECM) C1
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Engine Control Module (ECM) C1

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Engine Control Module (ECM) C1
WARNING: This page is about a different car, the 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) C1 Connector End View
GM1590596Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) C1 Connector Parts Information

Connector Part Information 
  • OEM: 15499466
  • Service: 88988360
  • Description: 73-Way F 0.64 2.8 Series, Sealed (BK)
Terminal Part Information 
  • Pins: 7, 20
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 9, 12, 13, 18, 19, 26, 33, 34, 35, 36, 37, 40, 44, 47, 48, 49, 53, 54, 55
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) C1 Connector Terminal Identification

Pin Wire Color Circuit No. Function
1 OG/BK 1786 Park/Neutral Signal
2-8 - - Not Used
9 WH 17 Stop Lamp Switch Signal
10 PU 3120 HO2S High Signal Sensor 2
11 GY/WH 3122 HO2S Low Signal Sensor 2
12 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
13 TN 5514 Low Reference
14 OG/BK 6014 Low Reference
15 GY/BK 433 BARO Sensor Signal
16 PU 30 Fuel Level Sensor Signal
17 D-BU 473 High Speed Cooling Fan Relay Control
18 D-BU 5985 Accessory Wake Up Serial Data
19 PK 439 Ignition 1 Voltage
20 RD/WH 540 Battery Positive Voltage
21 OG 6030 Brake Booster Vacuum Signal
22 YE/BK 6032 Low Reference
23 PU 1272 Low Reference
24 D-GN 890 Fuel Tank Pressure Sensor Signal
25-26 - - Not Used
27 TN 2501 High Speed GMLAN Serial Data Bus -
28 TN/BK 2500 High Speed GMLAN Serial Data Bus +
29 D-BU 1161 APP Sensor 1 Signal
30 BN 1271 Low Reference
31 TN 2759 Low Reference
32 L-BU 1162 APP Sensor 2 Signal
33 GY 2709 5-Volt Reference 1
34 GY 2700 5-Volt Reference 1
35 WH/BK 2932 5-Volt Reference 2
36 TN 1274 5-Volt Reference 1
37 TN/BK 472 IAT Sensor Signal
38 TN 2760 Low Reference
39-40 - - Not Used
41 YE 492 MAF Sensor Signal
42-46 - - Not Used
47 PK/BK 5290 Ignition 1 Voltage
48-49 - - Not Used
50 D-GN/WH 465 Fuel Pump Relay Control
51 - - Not Used
52 YE 447 Starter Relay Coil Control
53 GY 6031 5-Volt Reference 2
54-55 - - Not Used
56 WH/BK 1164 5-Volt Reference 2
57 - - Not Used
58 D-GN 335 Low Speed Cooling Fan Relay Control
59 BN 5069 PWR/TRN Relay Control
60 - - Not Used
61 WH 1310 EVAP Canister Vent Solenoid Control
62 - - Not Used
63 D-GN/WH 459 A/C Compressor Clutch Relay Control
64 - - Not Used
65 TN/WH 3121 HO2S Heater Low Control Sensor 2
66-67 - - Not Used
68 BN/WH 419 MIL Control
69-72 - - Not Used
73 BK/WH 451 Ground
RENDER: 1.0x

NO RELATED

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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.