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.

2005 Chevrolet Aveo LS, 4D Sedan, StandardFACTORY OEM SERVICE PROCEDURE

Defog Relay Connector End View

Defog Relay

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AK 36905 9-Way Relay F
Pin	Wire Color	Circuit No.	Function
86	D-BU	193	Rear Defog Relay Control (w/o A/C)
86	D-BU	193	Rear Defog Relay Control (w/A/C)
85	BK	450	Ground
87	PU	293	Rear Defog Element Supply Voltage
30	OG/D-GN	1142	Battery Positive Voltage

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.

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