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Powertrain Control Module (PCM) Connectors

Powertrain Control Module (PCM) C1

GM1228485Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15452125
  • Service: See Catalog
  • 56-Way F Micro 64 Sealed (BU)
Pin Wire Color Circuit No. Function
1 TN/BK 2500 High Speed GMLAN Serial Data (+) (1)
2 TN 2501 High Speed GMLAN Serial Data (-) (1)
3-5 - - Not Used
6 D-GN/WH 459 A/C Compressor Clutch Relay Control
7 BN 1271 Accelerator Pedal Position Low Reference (1)
8 PU 1272 Accelerator Pedal Position Low Reference (2)
9 - - Not Used
10 D-BU 473 High Speed Cooling Fan Relay Control
11 - - Not Used
12 PU 1589 Primary Fuel Level Sensor Signal
13 PK/BK 5293 Engine Main Relay Fused Control (4)
14 L-BU 6118 Manifold Air Temperature Sensor Signal
15 - - Not Used
16 D-GN 1049 ECM/PCM/VCM Class 2 Serial Data
17 GY 2700 A/C Pressure Sensor 5-Volt Reference
18 BN 4 Accessory Voltage
19 PK/BK 1039 Run/Crank Ignition 1 Voltage
20 RD/WH 840 Battery Positive Voltage
21 - - Not Used
22 WH 1310 EVAP Canister Vent Solenoid Control
23 - - Not Used
24 D-GN 890 Fuel Tank Pressure Sensor Signal
25 - - Not Used
26 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
27 D-BU 1161 Accelerator Pedal Position Signal (1)
28 - - Not Used
29 TN 2759 Fuel Tank Pressure Sensor Low Reference
30 WH/BK 1164 Accelerator Pedal Position 5-Volt Reference (1)
31 - - Not Used
32 L-BU 20 Stop Lamp Supply Voltage
33 - - Not Used
34 PK 2014 Coolant Pump Relay Coil Control
35-36 - - Not Used
37 D-GN/WH 465 Fuel Pump Primary Relay Control
38 BN 5069 Engine Main Relay Coil Control
39 - - Not Used
40 BN/WH 419 Check Engine Indicator Control
41 L-BU 1162 Accelerator Pedal Position Signal (2)
42 - - Not Used
43 TN 1274 Accelerator Pedal Position 5-Volt Reference (2)
44-45 - - Not Used
46 PU 420 Torque Converter Clutch Brake Switch Signal
47 GY 2709 Fuel Tank Pressure Sensor 5-Volt Reference
48 YE 447 Starter Relay Coil Control
49-50 - - Not Used
51 D-GN 335 Low Speed Cooling Fan Relay Control
52 - - Not Used
53 BN/WH 379 Cruise Control Clutch Pedal Position Switch Signal
54 D-GN 1433 Clutch Start Switch Signal
55 - - Not Used
56 BK/WH 2751 Signal Ground
Powertrain Control Module (PCM) C2

GM1332467Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15452126
  • Service: See Catalog
  • 73-Way F GT 280 Micro 64 Sealed
Pin Wire Color Circuit No. Function
1 RD 225 Generator Turn On Signal
2 D-GN 485 Throttle Position Sensor Signal (1)
3 - - Not Used
4 GY 596 5-Volt Reference
5 GY 2704 Manifold Absolute Pressure Sensor 5-Volt Reference
6 GY 2701 Throttle Position Sensor 5-Volt Reference
7 PU 486 Throttle Position Sensor Signal (2)
8 D-GN 6291 Manifold Absolute Pressure Sensor #2-Volt Reference
9 L-BU/BK 1688 5-Volt Reference
10-15 - - Not Used
16 PU 6413 EST Return Low Reference
17 YE 573 Crankshaft Position Sensor Signal (1)
18 PU 574 Crankshaft Position Sensor Low Reference (1)
19 - - Not Used
20 D-GN/WH 6292 Manifold Absolute Pressure #2 Low Reference
21 PK/BK 632 Camshaft Position Sensor Low Reference
22-24 - - Not Used
25 TN/WH 1669 Heated Oxygen Sensor Low Signal Bank 1 Sensor (2)
26 BN/WH 633 Camshaft Position Sensor Signal
27-28 - - Not Used
29 GY 1724 Supercharger Boost Solenoid Control
30 OG/BK 469 Manifold Absolute Pressure Sensor Low Reference
31 - - Not Used
32 TN 1667 Heated Oxygen Sensor Low Signal Bank 2 Sensor (1)
33 BK 1744 Fuel Injector Control (1)
34 - - Not Used
35 YE 410 Engine Coolant Temperature Sensor Signal
36 BK/WH 1704 Sensor Low Reference
37 GY 6337 Manifold Absolute Pressure Sensor #2 Signal
38 L-GN 432 Manifold Absolute Pressure Sensor Signal
39 BK 2752 Throttle Position Sensor Low Reference
40 BN/WH 6405 EST A Control
41 YE 492 Mass Air Flow Sensor Signal
42 D-GN/WH 6407 EST C Control
43 BK/WH 1423 Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (2)
44 - - Not Used
45 GY 23 Generator Field Duty Cycle Signal
46 PU/WH 1668 Heated Oxygen Sensor High Signal Bank 1 Sensor (2)
47 - - Not Used
48 PU 1666 Heated Oxygen Sensor High Signal Bank 2 Sensor (1)
49-50 - - Not Used
51 TN 472 Intake Air Temperature Sensor Signal
52 BK 2761 Coolant Temperature Sensor Low Reference
53 L-GN/BK 1745 Fuel Injector Control (2)
54 L-BU/BK 844 Fuel Injector Control (4)
55 PK/BK 1746 Fuel Injector Control (3)
56-57 - - Not Used
58 D-GN 676 Heated Oxygen Sensor Heater High Control Bank 1 Sensor (1)
59 D-BU/WH 6406 EST B Control
60 L-BU/WH 6408 EST D Control
61-63 - - Not Used
64 BK 2760 Intake Air Temperature Sensor Low Reference
65 BN 582 Throttle Actuator Control Close
66 YE 581 Throttle Actuator Control Open
67 - - Not Used
68 D-BU 496 Knock Sensor Signal (1)
69 GY 1716 Knock Sensor Low Reference (1)
70-72 - - Not Used
73 BK/WH 451 Signal Ground
Powertrain Control Module (PCM) C3 (M86)

GM1283894Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15437820
  • Service: See Catalog
  • 56-Way F Micro 64 Sealed (GY)
Pin Wire Color Circuit No. Function
1-9 - - Not Used
10 TN 891 Boost Gauge Signal
11-14 - - Not Used
15 TN/BK 231 Oil Pressure Switch Signal
16-21 - - Not Used
22 WH/BK 2932 5-Volt Reference
23-30 - - Not Used
31 GY/BK 433 BARO Sensor Signal
32-35 - - Not Used
36 OG/BK 6014 Low Reference
37 D-GN/WH 428 EVAP Canister Purge Solenoid Control
38-43 - - Not Used
44 PU 401 VSS Low Signal
45 YE 400 VSS High Signal
46-56 - - Not Used
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