2011-2016 GM Duramax 6.6L LML Complete Transmissions
It's no secret that the factory transmission on your 2011-2016 GM 2500/3500 becomes a weak point once you've added on tons of horsepower and torque to your GM 6.6L Duramax LML's engine. Instead of trying to pick and choose the transmission upgrades that will best suit your particular applications, why not totally replace it with a complete aftermarket transmission? These complete GM 2500/3500 transmissions drop right into place of your stock trans and will be able to handle huge levels of both power and performance. GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.