Transfer Case Automatic Transmission Fits 04-06 SIERRA 2500 PICKUP 6684640
SIERRA 2500 PICKUP 04-05 Floor Shift, AT, 5 speed (opt M74). SIERRA 2500 PICKUP 04-05 Floor Shift, MT, 6 speed (opt ML6). SIERRA 2500 PICKUP 06 AT, 6 speed (opt MW7), floor shift (opt NP2). SIERRA 2500 PICKUP 06 MT, 6 speed (opt ML6).