Engine Computer for 2004 Chevrolet Trailblazer

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There are 18 choices for the 2004 Chevrolet Trailblazer Engine Computer !!!
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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) ID YFKB
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFKD
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFKF
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFKH
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFKJ
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFKX
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFKY
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFPZ
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFXL
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFXM
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFXN
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFXP
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YFYY
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YHRA
TRAILBLAZER EXT Electronic Control Module 5.3L (next to air box) ID YHTN
TRAILBLAZER EXT Throttle Control (left hand firewall) (5.3L)