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SIERRA 3500 PICKUP
- (Automatic Transmission, 6.6L)
  - diesel
    - 4x2
      - ID OMCF
      - ID OUCF
    - 4x4
      - ID OMEF
      - ID OMKF
  - gasoline
    - 4x2
    - 4x4
SIERRA DENALI 3500
- (Automatic Transmission)
  - diesel
    - ID OMEF
    - ID OMKF
  - gasoline

Transmission Assembly for 2021 GMC Sierra 3500

Fits: SIERRA 3500 PICKUP Automatic Transmission, 6.6L diesel 4x4 ID OMEF (change)

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