Chevrolet Silverado 1500 2019–2022 — technical service bulletin
Bulletin N222372592 · NHTSA communication 10228951 · issued Jan 6, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2022
model years
7
vehicle entries
Official 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 install a radiator air front lower baffle and, if necessary, reprogram the Engine Control Module.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.