(2015) GMC Truck-Sierra Denali 3500 (2011 Up) AT, 6.0L, 4x4 AT Transmission - <30K miles 4.8 8L Engine MT (2001-2005) -

8L Engine MT (2001-2005) - 30K-60K miles

(RWD) MT Transmission (2014-2016) - 60K-90K miles

w/o ID 1DDA AT Transmission (2011) - 90K-120K miles

6L Engine (2014-2018) - 90K-120K miles

(2015) GMC Truck-Sierra Denali 3500 (2011 Up) AT, 6.0L, 4x4 AT Transmission - <30K miles 4.8 8L Engine MT (2001-2005) -GMC Truck Sierra Denali 3500 (2011 Up) AT, 6. 0L, 4x4 AT Transmission (2015) <30K miles This used OEM transmission is listed as its own product for the <30K miles option, so the price shown belongs to this exact mileage selection. It is a practical replacement choice for buyers who want an OEM style part without dealer new pricing. Please verify fitment before ordering. Match the year, make, model, engine size, drivetrain, VIN notes, transmission