GENUINE MILLER TOOL. 2022 (DS, DT, GU, LA, LD, LX, WD, WK) – Systems (21 – Transmission and Transfer Case). 2021 (GA) – Systems (21 – Transmission and Transfer Case). 2021 (DS, DT, GA, GU, LA, LD, LX, WD) – Systems (21 – Transmission and Transfer Case).