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SIERRA 1500 PICKUP
- classic style (mirrors mount inner window corner)
  - (3.42 ratio, opt GU6)
    - (9.5" ring gear, 12 bolt cover)
- new style (mirrors mount on door skin)
  - 8.6" ring gear (3.42 ratio, opt GU6)
  - 9.50" ring gear
    - AAM built (opt SU7)
      - 3.23 ratio (opt GU5)
      - 3.42 ratio (opt GU6)
    - GM built (opt SU8)
      - 3.23 ratio (opt GU5)
      - 3.42 ratio (opt GU6)
  - 9.75" ring gear
    - 3.23 ratio (opt GU5)
    - 3.42 ratio (opt GU6)
    - 3.73 ratio (opt GT4)
SIERRA DENALI 1500
- 4WD
  - 5.3L
    - AAM built (opt SU7)
    - GM built (opt SU8)
  - 6.2L
- RWD
  - AAM built (opt SU7)
  - GM built (opt SU8)

Rear Axle Assembly for 2019 GMC Sierra 1500

Fits: SIERRA 1500 PICKUP new style mirrors mount on door skin 9.75 ring gear 3.73 ratio opt GT4 (change)

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