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Service bulletins for the 2013 Cadillac ATS

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

2400 on file from NHTSA, as of 2026-10-19.

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By component

By trouble code

By topic

Only bulletins with component: Heating and air conditioning are shown. Show all

Bulletins, newest first
16NA0082024-02-12. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; VISIBILITY. Subject: Auto-On Rear Window Defogger and Outside Rear View Mirror (OSRVM) Defogger Not operating
PIT5099G2023-12-26. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. 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.
PIT5099A2023-12-11. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A/C Blows Warm Or Poor Performance.
PIC57382023-12-11. Service bulletin. EQUIPMENT:ELECTRICAL; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Outside Air Temperature Does Not Update Correctly And Or Erratic HVAC Operation.
PIC57302023-12-11. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Enabling After-blow.
131982023-12-11. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Servicel Update for HVAC System Performance Expires with Base Warranty
PIP5540J2023-01-30. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW:ELECTRICAL HEATING ELEMENT. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
PIT5099F2022-07-25. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. 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.
12-01-37-001F2022-07-12. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C service.
PI11602021-04-29. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER. Water on Front Compartment Floor and/or Musty Odor Condition/Concern Important: On vehicles built before VIN # D0142531, ensure the HVAC After-Blow function has been enabled. See the latest version of PIC5730 for instructions. Some customers may comment that, after running the air conditioner (A/C), water is noticed on the floor or in extreme cases a musty odor may be detected in the vehicle. This could be caused by a mis-positioned HVAC drain assembly in the floor. Some vehicles may also have a secondary drain tube within the drain assembly and this tube could contribute to the musty odor
PI-1408E2021-04-16. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Musty Odor from HVAC Vents on Startup Condition/Concern Some customers may comment on a musty or mildew odor coming from the HVAC instrument panel air outlet vents on startup. The odor most likely will dissipate after 30-60 seconds of operation. The odor generally occurs after the vehicle has been parked for 2–6 hours with sun load with temperatures of 21°C (70°F) or higher. This may be caused by condensation building up on the evaporator core, which does not evaporate by itself in humid conditions. The odor may be the result of microbial growth on the evaporator core being released into the air stream by the HVAC blower motor.
PIT5099E2020-08-10. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. 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.
PIT5099D2018-11-13. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. 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.
PIC5979A2018-10-15. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary Information communication provides information to the technician about vehicles that have the Heater-Vent-Air Conditioning system discharge temperature to vary from side to side when the set temperature is set to the same value. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.
PIT5099C2018-08-06. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. 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.
99-01-39-004F2018-06-11. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure to correct the customers concern of odor coming from the Air conditioning.
03-08-48-006I2018-06-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW; EQUIPMENT. This informational bulletin provides a revision for 03-08-48-006I to add model years and update parts information.
99-01-39-004E2018-05-29. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure to correct the customers concern of odor coming from the Air conditioning.
99-01-39-004F2018-05-29. Service bulletin. EQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This technical bulletin provides a procedure to correct the customers concern of odor coming from the Air conditioning.
PI1160B2018-05-29. Service bulletin. EQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This preliminary information bulletin provides a procedure to inspect and replace the secondary drain tube and a housing seal, to repair the cutomers concern of water on the floor and musty smell.
PI1408A2018-05-21. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This preliminary informational bulletin provides repair information to correct a customer concern of musty odor from HVAC vents on startup.
PI11602018-05-21. Service bulletin. EQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This preliminary information bulletin provides a procedure to inspect and replace the secondary drain tube and a housing seal, to repair the cutomers concern of water on the floor and musty smell.
99-01-39-004F2018-05-21. Service bulletin. EQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure to correct the customers concern of odor coming from the Air conditioning.
PI1408B2018-05-21. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This preliminary informational bulletin provides repair information to correct a customer concern of musty odor from HVAC vents on startup.
PI14402018-05-07. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This preliminary informational bulletin provides technicians with diagnostic tips for a customer concern of odor emanating from HVAC system.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.