Buick TSB #N222372591-01
2020 Buick Encore GX
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- Service Update. Certain vehicles may have a condition in which ice or sludge can accumulate in the Charge Air Cooler (CAC) or Closed Crankcase Ventilation (CCV) system when driving in extremely cold weather conditions (-18°C (0°F) or less). Dealers will reprogram the Engine Control Module.