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Home >> Chevrolet >> 2005 >> Equinox LT, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.4L - Introduction >> Component Locator >> Powertrain Control Module (PCM) Connectors
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Powertrain Control Module (PCM) Connectors

Powertrain Control Module (PCM) C1 Connector End View

GM1335548Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15450304
  • Service: 88988487
  • 56-Way F (BU)
Pin Wire Color Circuit No. Function
1 TN/BK 2500 High Speed GMLAN Serial Data (+)
2 TN 2501 High Speed GMLAN Serial Data (-)
3 - - Not Used
4 GY 2700 5-Volt Reference
5 - - Not Used
6 BN/WH 419 MIL Control
7 TN 5514 Low Reference
8-9 - - Not Used
10 WH 1310 EVAP Canister Vent Solenoid Control
11 - - Not Used
12 TN 2759 Low Reference
13-17 - - Not Used
18 YE 743 Accessory Voltage
19 PK 639 Ignition 1 Voltage
20 RD/WH 1440 Battery Positive Voltage
21 - - Not Used
22 BN 818 VSS Signal
23 YE 447 Starter Relay Coil Control
24 BN 5069 Engine Main Relay Coil Control
25 - - Not Used
26 D-GN 890 Fuel Tank Pressure Sensor Signal
27-30 - - Not Used
31 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
32 L-BU 20 Stop Lamp Supply Voltage
33 D-GN/WH 459 A/C Compressor Clutch Relay Control
34-36 - - Not Used
37 D-GN/WH 465 Fuel Pump Primary Relay Control
38 OG/BK 1786 Transmission Park/Neutral Signal
39-42 - - Not Used
43 PU 1589 Primary Fuel Level Sensor Signal
44 GY 1884 Cruise Control Set/Coast/Resume/Accelerate Switch Signal
45 - - Not Used
46 PU 420 Torque Converter Clutch Brake Switch Signal
47 - - Not Used
48 D-GN 335 Low Speed Cooling Fan Relay Control
49 - - Not Used
50 D-BU 473 High Speed Cooling Fan Relay Control
51-52 - - Not Used
53 GY 2709 Fuel Tank Pressure Sensor 5-Volt Reference
54-56 - - Not Used
Powertrain Control Module (PCM) C2 Connector End View

GM1332467Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15450306
  • Service: 88988489
  • 73-Way F (BK)
Pin Wire Color Circuit No. Function
1 BN 1456 Exhaust Gas Recirculation Valve Position Signal
2 TN 800 UART Serial Data 1
3 OG/BK 1061 UART Serial Data 2
4 PK/BK 1746 Fuel Injector Control 3
5 TN 1744 Fuel Injector Control 1
6 L-GN/BK 1745 Fuel Injector Control 2
7 TN/WH 845 Fuel Injector Control 5
8 TN 2753 Exhaust Gas Recirculation Sensor Low Reference
9 YE/BK 846 Fuel Injector Control 6
10 L-BU/BK 844 Fuel Injector Control 4
11 OG/WH 2122 IC 2 Control
12 GY/WH 3113 Heated Oxygen Sensor Heater Low Control Bank 1 Sensor 1
13 OG 1676 Exhaust Gas Recirculation Solenoid Supply Voltage
14 - - Not Used
15 PU 574 Low Reference
16 GY 435 Exhaust Gas Recirculation Solenoid Control
17 - - Not Used
18 L-GN 432 Manifold Absolute Pressure Sensor Signal
19-20 - - Not Used
21 OG 631 Camshaft Sensor 12-Volt Reference
22 L-GN 1867 Crankshaft Position Sensor 12-Volt Reference
23-25 - - Not Used
26 BN/WH 633 Camshaft Position Sensor Signal
27 L-BU/BK 647 Medium Resolution Engine Speed Signal
28-29 - - Not Used
30 OG/BK 469 Manifold Absolute Pressure Sensor Low Reference
31 - - Not Used
32 PK/BK 632 Camshaft Position Sensor Low Reference
33 GY 5047 Exhaust Gas Recirculation 5-Volt Reference
34 GY 2704 5-Volt Reference
35 - - Not Used
36 GY 2303 Knock Sensor Low Reference 2
37 YE 2174 Ignition Control Timing Low Reference 1
38 D-BU 496 Knock Sensor Signal 1
39 BK/WH 1251 Ground
40 GY 1716 Knock Sensor Low Reference 1
41 D-GN/WH 428 EVAP Canister Purge Solenoid Control
42-46 - - Not Used
47 TN/WH 1653 HO2S 1 Low Signal
48 PU/WH 1665 HO2S 1 High Signal
49-52 - - Not Used
53 OG 225 Generator Turn On Signal
54 L-BU 1876 Knock Sensor Signal 2
55 YE 410 Engine Coolant Temperature Sensor Signal
56 BK/WH 1351 Ground
57 TN/BK 231 Oil Pressure Switch Signal
58-60 - - Not Used
61 PU 2121 IC 1 Control
62 - - Not Used
63 L-BU 2123 Ignition Control 3
64-72 - - Not Used
73 BK/WH 451 Ground
Powertrain Control Module (PCM) C3 Connector End View

GM1335548Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15450305
  • Service: 88988488
  • 56-Way F (L-GY)
Pin Wire Color Circuit No. Function
1-3 - - Not Used
4 TN/WH 1669 HO2S 2 Low Signal
5 - - Not Used
6 YE 492 Mass Air Flow Sensor Signal
7 - - Not Used
8 GY/WH 3122 HO2S 2 Heater Low Control
9-18 - - Not Used
19 PU/WH 1668 HO2S 2 High Signal
20-25 - - Not Used
26 TN 472 Intake Air Temperature Sensor Signal
27-49 - - Not Used
50 TN 2760 Intake Air Temperature Sensor Low Reference
51-56 - - Not Used
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