SIERRA 2500 PICKUP 06 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7). SIERRA 2500 PICKUP 07 Transmission; classic style (creased door skin), (LH fan shroud), (AT, 6 speed, opt MW7). SIERRA 2500 PICKUP 07 Transmission; new style (smooth door skin), 6.6L, (LH fan shroud).
