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Check Engine & Trans fluid questions
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04-21-2013, 12:08 AM
iwillnc
Hummer Professional
Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
Re: Check Engine & Trans fluid questions
What year is it? if it's an 07+ 3.7l i5, then it should be smooth as butter, they are extremely smooth engines.
06, 3.5 was slightly rougher, but nothing "bad" by any sense
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