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SILVERADO 1500 PICKUP
- Electronic Control Module
  - (left hand front under battery)
    - 4.3L
    - Without 4.3L
- Throttle Control
  - (left hand firewall)
SILVERADO 2500 PICKUP
- Compressed Natural Gas (CNG)
  - (Passenger Side front engine compartment)
- Electronic Control Module
  - (left hand front under battery)
    - diesel
    - gasoline
      - 6.0L
      - 8.1L
- Fuel Injection Control
  - (6.6L turbo diesel)
    - (on Passenger Side valve cover)
- Throttle Control
  - (left hand firewall)
SILVERADO 3500 PICKUP
- Compressed Natural Gas (CNG)
  - (Passenger Side front engine compartment)
- Electronic Control Module
  - (left hand front under battery)
    - diesel
    - gasoline
      - 6.0L
      - 8.1L
- Fuel Injection Control
  - (6.6L turbo diesel)
    - (on Passenger Side valve cover)
- Throttle Control
  - (left hand firewall)

Engine Computer for 2003 Chevrolet Silverado

Fits: SILVERADO 1500 PICKUP Electronic Control Module left hand front under battery Without 4.3L (change)

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