Fluids Capacities and Specifications

Engine Oil Capacities
Crankcase	6.0 quarts	(5.7 L)
Cooling System Capacity
Cooling System	14.8 quarts	(14 L)
Fuel Tank Capacities
Fuel Tank	32.0 gallons	(121.1 L)
Front Axle Oil Capacities
Front Axle Differential	2.6 pints	(1.2 L)
Rear Axle Oil Capacities
Rear Axle Differential	4.0 pints	(1.9 L)
Transfer Case Oil Capacities
Transfer Case
Borg Warner 4484	1.5 quarts	(1.4 L)
Transmission
Transmission
4L60-E
Pan Removal and Replacement	5.0 quarts	(4.7 L)
After Complete Overhaul	11 quarts	(10.6 L)

Many people saved thousands of dollars by doing some technical service procedures for their 2003 Hummer H2 by themselves. The easiest type of technical maintenance is changing engine oil, axles oil, manual and automatic transmission oil. Changing break fluid in 2003 Hummer H2 is also is a simple task. If you want to change engine oil, for instance, by yourself and save a couple of bucks you need to know how much this fluid engine oil is needed for 2003 Hummer H2. If you fill engine or axles of your car with oil to the brim it may damage your vehicle engine or axles and void manufacturer warranty. Good news! We have this information and we give it to you for free.

Note: all capacities are approximate. When adding, be sure to fill to the appropriate level, as recommended in user manual for your 2003 Hummer H2. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Note: not all air conditioning refrigerants are the same. If the air conditioning system in your vehicle needs refrigerant, be sure the proper refrigerant is used. If you're not sure, ask your dealer.

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