There are 3 choices

Choose One

Electronic Control Module
- (left hand front under battery)
  - 4.3L
  - Without 4.3L
Throttle Control
- (left hand firewall)

Engine Computer for 2003 Chevrolet Silverado 1500 HD

Attention!

There are 3 choices for the 2003 Chevrolet Silverado 1500 HD Engine Computer !!!
Choose Your Option

Electronic Control Module (left hand front under battery) 4.3L
Electronic Control Module (left hand front under battery) Without 4.3L
Throttle Control (left hand firewall)

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