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 MANUALSPONTIAC2004GTO STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSOEM CONNECTOR END VIEWSCONNECTOR END VIEWSIGNITION SWITCH C1 CONNECTOR END VIEW

2004 Pontiac GTO Standard

Ignition Switch C1 Connector End View

2004 Pontiac GTO StandardSECTION Ignition Switch C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		9123-5253 6-Way F (WH)
Pin	Wire Color	Circuit No.	Function
P	-	-	Not Used
W	BN/WH	4	Accessory Voltage
15	OG	300	Ignition 3 Voltage
15A	-	-	Not Used
50	PU	5	Crank Voltage
30	RD/WH	1640	Battery Positive Voltage

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.