Affected Component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

Date Published
JUL 27, 2020
NHTSA TSB #
10178385
TSB Document
Summary
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.