Buick Workshop Service and Repair Manuals > LaCrosse FWD L4-2.4L (2011) > Powertrain Management | Computers and Control Systems | Relays and Modules - Computers and Control Systems | Engine Control Module | Component Information | Technical Service Bulletins

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17 - M29R Headlamp Leveling Actuator - Right (TT2)
18 - B17 Barometric Pressure Sensor (LF1)

Buick Workshop Service and Repair Manuals