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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 88 (HVAC SYSTEM - AUTOMATIC)COMPONENT LOCATORHVAC CONNECTORSHVAC CONTROL MODULE C2
2008 Pontiac Grand Prix Base

HVAC Control Module C2

2008 Pontiac Grand Prix BaseSECTION HVAC Control Module C2
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: HVAC Control Module C2 Connector End View
GM744295Courtesy of GENERAL MOTORS CORP.
HVAC Control Module C2 Connector Part Information

Connector Part Information 
  • OEM: 12084944
  • Service: 12084944
  • Description: 16-Way F Micro-Pack 100 Series (BK)
Terminal Part Information 
  • Pins: A1- A4, A7, B1-B8
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
HVAC Control Module C2 Connector Terminal Identification

Pin Wire Color Circuit No. Function
A1 TN/WH 518 Lower Left Air Temperature Sensor Signal
A2 YE 61 Low Reference
A3 TN/BK 520 Lower Right Air Temperature Sensor Signal
A4 OG/BK 1057 Low Reference
A5-A6 - - Not Used
A7 GY/BK 754 Blower Motor Speed Control
A8 - - Not Used
B1 L-GN/BK 1647 Recirculation Door Control A
B2 PK/WH 1648 Recirculation Door Control B
B3 YE 1791 Left Air Temperature Door Control A
B4 D-BU/WH 1199 Left Air Temperature Door Control B
B5 WH/BK 1236 Right Air Temperature Door Control A
B6 D-BU 1646 Right Air Temperature Door Control B
B7 TN 2273 Mode Door Control A
B8 L-GN 2275 Mode Door Position Signal
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.