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 MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 668 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS & COMPONENT CONNECTOR END VIEWS)COMPONENT CONNECTOR END VIEWSHVAC CONTROL MODULE X2

2006 Chevrolet Cobalt SS, 4D Sedan, Standard

HVAC Control Module X2

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION HVAC Control Module X2

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Control Module X2 Connector End View

Courtesy of GENERAL MOTORS CORP.

HVAC Control Module X2

Pin	Wire	Circuit	Function
A1	0.35 PK	339	Ignition 1 Voltage
A2	0.35 GY	8	Instrument Panel Lamp Supply Voltage
A3	-	-	Not Used
A4	0.35 RD/WH	1540	Battery Positive Voltage
A5	0.8 BK	550	Ground
A6	0.35 L-GN	66	A/C Request Signal (C67)
A7	0.35 WH	193	Rear Defog Relay Control
A8	0.35 L-BU	292	Rear Defog Switch Signal

Connector Part Information

OEM: 15480081
Service: 88988315
Description: 8-Way F Micro-Pack 64 (BK)

Terminal Part Information

Terminal/Tray: 15359541/4
Core/Insulation Crimp: M/M
Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

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.