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SIERRA DENALI 1500
- Electronic Control Module
  - (left hand front engine compartment)
    - ID 12686382
    - ID 12686383
- Hybrid-Electric
  - (hybrid battery mounted)
    - (hybrid powertrain control module)
SIERRA DENALI 2500
- Diesel Control
  - (Passenger Side cylinder head)
    - (glow plug control)
- Electronic Control Module
  - (left hand front engine compartment)
    - 6.0L
    - 6.6L
      - ID 12711509
      - ID 12726761
SIERRA DENALI 3500
- Diesel Control
  - (Passenger Side cylinder head)
    - (glow plug control)
- Electronic Control Module
  - (left hand front engine compartment)
    - 6.0L
    - 6.6L

Engine Computer for 2018 GMC Sierra Denali

Fits: SIERRA DENALI 1500 Electronic Control Module left hand front engine compartment ID 12686383 (change)

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