What transmission fluid does a Hummer H2 use?

The Hummer H2 transmission fluid type depends on the year and transmission. Automatic transmissions require the manufacturer-recommended ATF — using the wrong type can cause shifting problems or damage. Manual transmissions use manufacturer-specified manual transmission fluid. See below for your specific year.

How much transmission fluid does a Hummer H2 take?

A drain-and-fill on the Hummer H2 automatic transmission typically takes 3.5-4.0 quarts. The total system capacity is 7-12 quarts. For a complete fluid exchange, you'll need the full capacity amount.

How often should I change transmission fluid in my Hummer H2?

Change your Hummer H2 automatic transmission fluid every 60,000-100,000 miles under normal conditions. For severe duty (towing, mountain driving, hot climates), change every 30,000-60,000 miles.

Does the Hummer H2 have a transmission dipstick?

Many 2010+ Hummer H2 models have sealed transmissions with no dipstick. Fluid level is checked via a fill plug underneath the vehicle. Older models typically have a traditional dipstick under the hood.

⚙️Transmission Fluid

Hummer H2 Transmission Fluid

Find the correct transmission fluid type and capacity for your Hummer H2. Covers automatic and manual transmissions for all years.

Quick Answer

The Hummer H2 transmission fluid type depends on your transmission — automatic models require the manufacturer-specified automatic transmission fluid. Manual transmissions use manufacturer-specified manual transmission fluid. See the year breakdown below.

2004-2009

Automatic Fluid TypeManufacturer-specified ATF (check owner's manual)

Auto Drain & Fill3.0 - 4.0 quarts

Auto Total Capacity7.0 - 12.0 quarts

Manual Fluid TypeManufacturer-specified manual transmission fluid

Manual Capacity2.0 - 3.0 quarts

Change Interval30,000 - 60,000 miles

Notes

→Use ONLY the manufacturer-specified fluid — wrong ATF can damage the transmission
→Check transmission fluid level with engine running and at operating temperature
→Dark, burnt-smelling fluid indicates overheating — change immediately

Shop on Amazon →Full Repair Guide →

2003-2003

Automatic Fluid TypeManufacturer-specified ATF (check owner's manual)

Auto Drain & Fill3.0 - 4.0 quarts

Auto Total Capacity7.0 - 12.0 quarts

Manual Fluid TypeManufacturer-specified manual transmission fluid

Manual Capacity2.0 - 3.0 quarts

Change Interval30,000 - 60,000 miles

Notes

→Use ONLY the manufacturer-specified fluid — wrong ATF can damage the transmission
→Check transmission fluid level with engine running and at operating temperature
→Dark, burnt-smelling fluid indicates overheating — change immediately

Shop on Amazon →Full Repair Guide →

Frequently Asked Questions

What transmission fluid does a Hummer H2 use?: The Hummer H2 transmission fluid type depends on the year and transmission. Automatic transmissions require the manufacturer-recommended ATF — using the wrong type can cause shifting problems or damage. Manual transmissions use manufacturer-specified manual transmission fluid. See below for your specific year.
How much transmission fluid does a Hummer H2 take?: A drain-and-fill on the Hummer H2 automatic transmission typically takes 3.5-4.0 quarts. The total system capacity is 7-12 quarts. For a complete fluid exchange, you'll need the full capacity amount.
How often should I change transmission fluid in my Hummer H2?: Change your Hummer H2 automatic transmission fluid every 60,000-100,000 miles under normal conditions. For severe duty (towing, mountain driving, hot climates), change every 30,000-60,000 miles.
Does the Hummer H2 have a transmission dipstick?: Many 2010+ Hummer H2 models have sealed transmissions with no dipstick. Fluid level is checked via a fill plug underneath the vehicle. Older models typically have a traditional dipstick under the hood.

Hummer H2 Repair Guides

→Hummer H2 Transmission Fluid Change →Hummer H2 Differential Fluid Change →Hummer H2 Clutch Replacement

Browse all Hummer guides →Browse all Hummer H2 guides →

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