There are 6 choices

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SIERRA 2500 PICKUP
- 10 speed
  - opt NQF
  - opt NQH
- 6 speed
  - opt NQF
  - opt NQH
SIERRA DENALI 2500
- 10 speed transmission
- 6 speed transmission

Transfer Case for 2020 GMC Sierra 2500 HD

Fits: SIERRA 2500 PICKUP 10 speed opt NQH (change)

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