Quote:
Originally Posted by Ziegelsteinfaust
But only in wide use for about 5-6 years now.
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All of the gas HD trucks from 2007(GMT900 only) and later came with 6L90E. The half ton trucks got the 6L80E in 2007(GMT900), but the 4L60E/4L65E/4L70E was an option on half ton vehicles up until 2009, when the 6 speed became the only option. So they have been in wide use for 10-12 years now.