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SUBURBAN 1500
- Automatic Transmission
  - 4x2
    - TH400
    - TH700
      - diesel
      - gasoline
        ECM equipped
        Without ECM equipped
  - 4x4
    - TH400
      - diesel
      - gasoline
    - TH700
      - diesel
      - gasoline
- Manual Transmission
  - (4 speed)
    - 4x2
    - 4x4
SUBURBAN 2500
- Automatic Transmission
  - 4x2
    - TH400
    - TH700
      - diesel
      - gasoline
        ECU equipped
        Without ECU equipped
  - 4x4
    - TH400
      - diesel
      - gasoline
    - TH700
      - diesel
      - gasoline
- Manual Transmission
  - 4 speed
    - 4x2
    - 4x4
  - 5 speed
    - 4x2
    - 4x4

Transmission Assembly for 1989 GMC Suburban

Fits: SUBURBAN 1500 Automatic Transmission 4x4 TH400 gasoline (change)

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