16159 Service Update
Buick technical service bulletin GCUS-3-778 for 2017 Buick Lacrosse.
- Bulletin number
- GCUS-3-778
- Component
- Power train
- Summary
- 16159 Service Update. On certain vehicles with an 8-speed transmission (MRC), under certain downhill driving conditions, these vehicles may inappropriately remain in a mode of delayed upshifts that can only be exited on an ignition key cycle or gear selector shift to neutral. Dealers are to reprogram the transmission control module.
Owners of these vehicles have filed 9 complaints in the transmission category.
Vehicles covered
- Buick Lacrosse 2017 2017
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