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4.3L (VIN X, 8th digit)
4.8L (VIN V, 8th digit)
5.3L
- VIN T (8th digit)
- VIN Z (8th digit)
6.0L
- VIN N (8th digit)
- VIN U (8th digit)
  - CNG
  - gasoline

Engine Assembly for 2004 GMC Sierra 1500 HD

Fits: 6.0L VIN U 8th digit CNG (change)

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