There are 20 choices

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Automatic Transmission
- 4.3L
  - 4x2
    - Extended Cab (ID CBD)
    - Regular Cab
  - 4x4
- 4.8L
  - 4x2
  - 4x4
- 5.3L
  - 4x2
    - Crew Cab
    - Extended Cab
      - hybrid option (opt HP2)
      - Without hybrid option
    - Regular Cab
  - 4x4
    - hybrid option (opt HP2)
    - Without hybrid option
- 6.0L
  - 4L60E (opt M32)
    - 4x2
    - 4x4
  - 4L70E (opt M70)
    - 4x2
      - 5' 9" box
      - 6' 6" box
    - 4x4
  - 4L80E (opt Manual Transmission1)
    - 4x2
    - 4x4
Manual Transmission
- 4x2
- 4x4

Transmission Assembly for 2006 GMC Sierra 1500 HD

Fits: Automatic Transmission 6.0L 4L60E opt M32 4x4 (change)

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