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Electronic Control Module
- 4.2L (left hand engine)
- 5.3L (next to air box)
  - ID YFKB
  - ID YFKD
  - ID YFKF
  - ID YFKH
  - ID YFKJ
  - ID YFKX
  - ID YFKY
  - ID YFPZ
  - ID YFXL
  - ID YFXM
  - ID YFXN
  - ID YFXP
  - ID YFYY
  - ID YHRA
  - ID YHTN
Throttle Control
- (left hand firewall)
  - (5.3L)

Engine Computer for 2004 Buick Rainier

Fits: Electronic Control Module 5.3L next to air box ID YFXL (change)

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