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October 1, 2017 Service bulletin

Malfunction Indicator Lamp (MIL) Illuminated

Buick technical service bulletin 17-NA-338 for 2017-2018 Buick Cascada.

Bulletin number
17-NA-338
Component
Engine and engine cooling: engine: engine control module (ecu/ECM): software
Summary
Malfunction Indicator Lamp (MIL) Illuminated - DTC P0366 and/or P0014 Condition Some customers may comment that the MIL is illuminated. The technician may find one or more of the following DTCs set: • P0366 • P0014 Cause This condition may be caused by a sporadically unlocked exhaust cam phaser that can oscillate during engine start, falsely setting the DTC/s. Correction If you encounter a vehicle with the above concern, reprogram the ECM software with the latest software available

Owners of these vehicles have filed 15 complaints in the engine category.

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