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 MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2009 (WIRING SYSTEMS AND POWER MANAGEMENT - INLINE HARNESS CONNECTOR END VIEWS - X100 THROUGH X275)INLINE HARNESS CONNECTOR END VIEWSX121 BATTERY POSITIVE HARNESS TO BATTERY NEGATIVE HARNESS (9L4)

2006 Chevrolet Suburban C1500, 5.3 Z

X121 Battery Positive Harness to Battery Negative Harness (9L4)

2006 Chevrolet Suburban C1500, 5.3 ZSECTION X121 Battery Positive Harness to Battery Negative Harness (9L4)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Connector Part Information Harness: Battery Positive OEM: 15326117 Service: Service by Harness- See Part Catalog Description: 1-Way F Metri-Pack 800 Series, Sealed (BK)	Connector Part Information Harness: Battery Negative OEM: 15326119 Service: 89046877 Description: 1-Way M Metri-Pack 800 Series, Sealed (BK)
Terminal Part Information Terminal/Tray: Service by Harness- See Part Catalog Core/Insulation Crimp: Not Available Release Tool/Test Probe: Not Available	Terminal Part Information Terminal/Tray: Service by Harness- See Part Catalog Core/Insulation Crimp: Not Available Release Tool/Test Probe: Not Available

X121 Battery Positive Harness to Battery Negative Harness (9L4)

Pin	Wire	Circuit	Function	Pin	Wire	Circuit	Function
1	8 BK	450	Ground	1	8 BK	450	Ground

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.