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2006 Hummer H3 Engine

Responding to the power issue, or the lack thereof, Hummer has announced that the I-5 will grow to 3.7L for 2007, and rumors say a V-8 version is on the way.
2006 Hummer H3 - Longterm Test

 Responding to the power issue, or the lack thereof, Hummer has announced that the I-5 will grow to 3.7L for 2007, and rumors say a V-8 version is on the way.  View Related Article

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