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Message: <blockquote data-quote="jtmcglothin" data-source="post: 4144515" data-attributes="member: 49453"><p>It’s a 4l60e I believe, I have the same one in my 2007 Silverado. No issues with mine and it’s a 5.3 with 35s and a 6” lift. Still shifts smooth with 130k on the clock so you should be fine. The biggest issue with these trucks is there’s no drain plug for the transmission fluid so it never gets changed which leads to premature failure. As mentioned earlier, it’s definitely a good idea to drop the pan and replace the filter and fluid.</p></blockquote><p></p>