2007 Pontiac Grand Prix BaseFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (PCM) Connector End View C3 (NU6)

Fig 1: PCM C3 Connector End View (NU6)
GM1524164Courtesy of GENERAL MOTORS CORP.
PCM C3 Connector Part Information (NU6)

Connector Part Information 
  • OEM: 15460474
  • Service: 88953347
  • Description: 56-Way F Micro-Pack/064 Series (GY)
Terminal Part Information 
  • Pins: 4-6, 8, 11, 12, 15, 19, 22-24, 26, 31, 33, 34, 39, 44, 46-51
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
PCM C3 Connector Terminal Identification (NU6)

Pin Wire Color Circuit No. Function
1-3 - - Not Used
4 TN/WH 3121 HO2S Low Signal
5 YE/BK 1227 TFT Sensor Signal
6 YE 492 MAF Sensor Signal
7 - - Not Used
8 BK/WH 3122 HO2S Heater Low Control - Sensor 2
9-10 - - Not Used
11 RD/BK 1230 AT ISS High Signal
12 YE 400 Signal High - Front
13-14 - - Not Used
15 GY 773 Transmission Range Switch Signal C
16-18 - - Not Used
19 PU 3120 HO2S High Signal
20-21 - - Not Used
22 YE 772 Transmission Range Switch Signal B
23 WH 776 Transmission Range Switch Signal P
24 WH 1804 TCC Release Switch Signal
25 - - Not Used
26 TN 472 IAT Sensor Signal
27-30 - - Not Used
31 WH 5268 Air Pressure Sensor
32 - - Not Used
33 L-GN 1222 1-2 Shift Solenoid Valve Control
34 BK/WH 771 Transmission Range Switch Signal A
35-38 - - Not Used
39 TN/BK 422 TCC Solenoid Valve Control
40-43 - - Not Used
44 PU 401 Signal Low - Front
45 - - Not Used
46 YE/BK 1223 2-3 Shift Solenoid Valve Control
47 RD/BK 1228 PC Solenoid Valve High Control (Sol. A)
48 BK 452 Low Reference
49 D-BU/WH 1231 AT ISS Low Signal
50 BK 2760 Low Reference
51 L-BU/WH 1229 PC Solenoid Valve Low Control (Sol. A)
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.