Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 213 (HVAC SYSTEM - AUTOMATIC)COMPONENT LOCATORHVAC CONNECTOR END VIEWSHVAC 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 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Control Module C2 Connector End View

Courtesy 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	BK	518	Lower Left Air Temperature Sensor Signal
A2	YE	61	Low Reference
A3	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 B
B2	PK/WH	1648	Recirculation Door Control A
B3	YE	1791	Air Temperature Door Control A
B4	D-BU	1199	Air Temperature Door Control B
B5	WH/BK	1236	Right Air Temperature Door Control A
B6	D-BU	1646	Right Air Temperature Control B
B7	TN	2273	Mode Door Control B
B8	L-GN	2275	Mode Door Control A

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.