Cadillac XT5 2017 Owner's Manual page 179

178 CLIMATE CONTROLS
It should only be replaced by a new
evaporator to ensure proper and safe
operation.
During service, all refrigerants should
be reclaimed with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to the
environment and may also create
unsafe conditions based on inhalation,
combustion, frostbite, or other
health-based concerns.