There are 4 choices

Choose One

TRAILBLAZER
- Electronic Control Module
  - (left hand engine)
TRAILBLAZER EXT
- Electronic Control Module
  - 4.2L (left hand engine)
  - 5.3L (next to air box)
- Throttle Control
  - (left hand firewall)
    - (5.3L)

Engine Computer for 2003 Chevrolet Trailblazer

Attention!

There are 4 choices for the 2003 Chevrolet Trailblazer Engine Computer !!!
Choose Your Option

TRAILBLAZER Electronic Control Module (left hand engine)
TRAILBLAZER EXT Electronic Control Module 4.2L (left hand engine)
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box)
TRAILBLAZER EXT Throttle Control (left hand firewall) (5.3L)

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