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Look no further than Moon Auto Parts. We stock high-quality used Hummer transmissions at the best rates. Both automatic and manual options are available. We carry transmissions for the Hummer H2 and H3 models.
Choosing the right Hummer transmission can feel overwhelming, especially when you're weighing your options between used and rebuilt units. Both come with their own set of advantages and trade-offs so understanding the difference is key. Used transmissions are pulled directly from donor vehicles and sold as-is. While they tend to have the lowest upfront cost, most dealers offer them without any testing, inspection, or guarantees. You're essentially buying the unknown history of another vehicle. Rebuilt transmissions, on the other hand, go through a complete restoration process. Skilled technicians fully disassemble each unit, test every individual component, and replace anything worn or damaged to meet OEM standards. The result is a transmission that performs like new at a fraction of the cost of a brand-new unit.
When searching around for used or rebuilt transmissions for a Hummer, you need to get a handle on which transmission families they came with in the H2 and H3 models. The reason being is that knowing what your Hummer came with will save you a world of trouble when it comes to making sure the transmission fits properly and doesn't turn into a junkyard special down the line.
GM equipped the H2 automatic transmissions hooked up to those big V8 transmission. Early models (6.0L) mostly ran the 4L60E or 4L65E 4-speed auto, while the later models (2008-2009, 6.2L) went with the more modern 6L80E 6-speed auto. You'll probably see these same transmissions popping up in GM full-size trucks and SUVs (like the Silverado, Tahoe, and Sierra), which is great because it means you might be able to find a used one for your Hummer. However, getting the right fit depends on a bunch of things: the bellhousing pattern, the transfer case setup, what kind of torque it can handle, and whether or not the computer calibration works.
The H3 (2006 - 2010) was pretty simple: it mostly ran the 4L60E 4-speed auto across all its different transmission options (3.5L, 3.7L inline-5, and 5.3L V8). Some trims also offered a 5-speed manual. Now, because the 4L60E was used in so many other GM models, you can actually swap it into a Hummer if the control module is compatible and the transmission is a match.
There are several factors that make Moon Auto Parts different from other dealers. The most special feature is the quality of the auto parts we sell. We check for leaks, corrosion, cracks, housing integrity, and wear. In depth, we also look for leaks, corrosion, cracks, housing integrity, and wear. To double-proof our engineering skills, we offer a 4-year & 40,000-mile warranty on all transmissions and free delivery to all commercial addresses in America.
Visit our website and use our AI-powered search tool on the homepage. Simply enter your Hummer's year, model, and transmission details, and our system will instantly match you with compatible transmission options. Once you've selected the right unit, complete your order by entering your shipping address and making a secure online payment. Every order includes free shipping to commercial addresses across the U.S. and is backed by our 4-year / 40,000-mile warranty.
