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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 93 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 3.8L - INTRODUCTION (2 OF 2))COMPONENT LOCATORPOWERTRAIN CONTROL MODULE CONNECTORSPOWERTRAIN CONTROL MODULE (PCM) C2 (NU3)
2008 Pontiac Grand Prix Base

Powertrain Control Module (PCM) C2 (NU3)

2008 Pontiac Grand Prix BaseSECTION Powertrain Control Module (PCM) C2 (NU3)
WARNING: This page is about a different car, the 2007 Buick LaCrosse and 2007 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: PCM C2 Connector End View (NU3)
GM1524159Courtesy of GENERAL MOTORS CORP.
PCM C2 Connector Part Information (NU3)

Connector Part Information 
  • OEM: 15460475
  • Service: 88953274
  • Description: 73-Way F Micro-Pack 64 Series (BK)
Terminal Part Information 
  • Pins: 1-13, 16, 18, 26- 31, 33- 35, 37, 41, 45- 48, 53, 55, 57, 58, 59, 61
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
PCM C2 Connector Terminal Identification (NU3)

Pin Wire Color Circuit No. Function
1 BN 1456 EGR Valve Position Signal
2 OG/BK 1061 UART Serial Data Secondary
3 TN 800 UART Serial Data Primary
4 BK/WH 845 Fuel Injector 5 Control
5 BK 1744 Fuel Injector 1 Control
6 YE/BK 846 Fuel Injector 6 Control
7 PK/BK 1746 Fuel Injector 3 Control
8 BK 2753 Low Reference
9 L-GN/BK 1745 Fuel Injector 2 Control
10 L-BU/BK 844 Fuel Injector 4 Control
11 TN/BK 424 IC Timing Signal
12 BK/WH 3112 HO2S Heater Low Control Sensor 1
13 RD 1676 EGR Solenoid High Control
14-15 - - Not Used
16 GY 435 EGR Solenoid Low Control
17 - - Not Used
18 L-GN 432 MAP Sensor Signal
19-25 - - Not Used
26 BK 630 Camshaft Position Signal
27 PU/WH 430 Low Resolution Engine Speed Signal
28 L-BU/BK 647 Medium Resolution Engine Speed Signal
29 BK 2761 Low Reference
30 OG/BK 469 Low Reference
31 BN 1174 Oil Level Switch Signal
32 - - Not Used
33 GY 2702 5-Volt Reference 1
34 GY 2704 5-Volt Reference 2
35 GY 474 5 Volt Reference 1
36 - - Not Used
37 RD/BK 453 Low Reference
38-40 - - Not Used
41 D-GN/WH 428 EVAP Canister Purge Solenoid Valve Control
42-44 - - Not Used
45 GY 23 Generator Field Duty Cycle Signal
46 D-BU 496 Knock Sensor 1 Signal
47 TN/WH 3111 HO2S Low Signal
48 PU/WH 3110 HO2S High Signal
49-52 - - Not Used
53 RD 225 Generator Turn On Signal
54 - - Not Used
55 YE 410 ECT Sensor Signal
56 - - Not Used
57 TN/BK 231 Oil Pressure Switch Signal
58 L-BU 1876 Knock Sensor 2 Signal
59 PK/BK 429 Air Solenoid Control
60 - - Not Used
61 WH 423 IC Timing Control
62-72 - - 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.