There are 7 choices

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SIERRA DENALI 1500
SIERRA DENALI 2500
- (6.6L)
  - diesel (VIN Y, 8th digit, opt L5P)
  - gasoline (VIN 7, 8th digit, opt L8T)
SIERRA DENALI 3500
- (6.6L)
  - diesel (VIN Y, 8th digit, opt L5P)
  - gasoline (VIN 7, 8th digit, opt L8T)

Engine Assembly for 2023 GMC Sierra Denali

Fits: SIERRA DENALI 2500 6.6L diesel VIN Y, 8th digit, opt L5P (change)

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