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Chevrolet TSB #N222372591
2021 Chevrolet Trailblazer
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- 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.
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