2005 Hummer H1
Vehicle Specs & Maintenance Data
The 2005 Hummer H1 maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Hummer H1.
For oil changes, the 2005 Hummer H1 takes 15W-40 motor oil with a capacity of 7 quarts. Brake fluid type is DOT 3, the recommended coolant is Dex-Cool (OAT), and transmission fluid is Dexron VI. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Hummer H1, torque the lug nuts to 110 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2005 Hummer H1 uses 15W-40 motor oil (7 qt capacity), requires lug nuts torqued to 110 ft-lbs, takes DOT 3 brake fluid.
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