Cadillac XT4 2018–2020 — technical service bulletin
Bulletin 20NA224 · NHTSA communication 10187419 · issued Dec 10, 2020
Technical service bulletin
communication type
Equipment
component
2018–2020
model years
5
vehicle entries
Official summary
This service bulletin provides a procedure to inspect the A/C compressor failure due to a combination of low refrigerant and/or PAG oil to correct a condition of Air Conditioning Blows Warm Air and/or Does Not Get Cold.
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.