Service bulletins for the 2015 Cadillac XTS
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.
1634 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Heating and air conditioning are shown. Show all
| PIT5099G | 2023-12-26. 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. |
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| PIT5099A | 2023-12-11. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A/C Blows Warm Or Poor Performance. |
| PIP5540J | 2023-01-30. 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. |
| PIT5099F | 2022-07-25. 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. |
| 12-01-37-001F | 2022-07-12. 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. |
| PIT5099E | 2020-08-10. 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. |
| PIC6376C | 2020-08-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary information communicates that a dealer may receive a replacement AC evaporator with TXV tubes that are bent. The dealer is instructed on how to inspect for bent tubes. The dealer is advised if the evaporator TXV tubes are bent that they should not attempt to adjust the tubes but instead should replace the evaporator again. |
| PIC6376B | 2020-06-15. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary information communicates that a dealer may receive a replacement AC evaporator with TXV tubes that are bent. The dealer is instructed on how to inspect for bent tubes. The dealer is advised if the evaporator TXV tubes are bent that they should not attempt to adjust the tubes but instead should replace the evaporator again. |
| PIT5099D | 2018-11-13. 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. |
| PIT5099C | 2018-08-06. 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. |
| 99-01-39-004F | 2018-06-11. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure to correct the customers concern of odor coming from the Air conditioning. |
| PIC6079 | 2018-06-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW; STEERING; SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary Information communication provides information to the technician about vehicles with remote start and the changes during a Remote Vehicle Start event as of the 2015 model year. The following functions have changed for 2015 Dual Zone Auto HVAC settings, Rear window defogger, heated seats, ventilated seats, and heated steering wheel. On transition to ignition the following Remote Vehicle Start event, the Heater-Vent-Air Conditioning settings will return to last known settings. During a remote start event, the rear window defogger will turn on if the outside temperature is 44 Fahrenheit (7 Celsius) or below. During a Remote Vehicle Start event, the heated seats will turn to the high setting when the ambient temperature is below 50 Fahrenheit (10 Celsius). During a Remote Vehicle Start event, the ventilated seats will turn to the high setting when the ambient temperature is above 80 Fahrenheit (27 Celsius). During a Remote Vehicle Start event, the heated steering wheel does not turn on. |
| PIT5383 | 2018-06-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT. This Preliminary Information communication provides information to the technician about vehicles with various Heater-Vent-Air Conditioning concerns. Technician will need to reprogram HVAC Control Module with the updated calibration available in TIS2WEB starting on 1/17/2015. |
| 99-01-39-004F | 2018-05-29. 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. |
| 99-01-39-004G | 2018-05-21. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM. This technical bulletin provides repair information for the correction of a customer concern of short duration musty odors emitted from the HVAC system at vehicle start-up in hot, humid conditions. |
| 99-01-39-004F | 2018-05-21. 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. |
| PI1440 | 2018-05-07. 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. |
| PIT5099A | 2018-05-07. 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. |
| 120137001B | 2018-05-07. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This informational bulletin provides information to dealership personnel on a new refrigerant (R-1234yf) for A/C service. |
| PIT5383B | 2018-01-22. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary Information communication provides information to the technician about vehicles that have various Heater-Vent-Air Conditioning issues. Technician should use Tis2Web to reprogram the Heater-Vent-Air Conditioning control module. |
| 030848006J | 2017-12-22. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This informational bulletin provide information for the technicians to repair the rear window defroster contact or tabs. |
| PIE0339B | 2017-08-15. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This engineering information bulletin announces the end of need for information from the field regarding poor A/C performance. |
| PI1440 | 2017-08-15. 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. |
| PIC6029 | 2017-08-15. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary Information communication provides information to the technician about vehicles that the rear Heater-Vent-Air Conditioning does not retain the temperature settings after a key cycle. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. |
| 14891 | 2017-02-01. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. 14891 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO REMOVE THE A/C ACTUATOR, ROTATE THE BYPASS DOOR TO THE FULL-OPEN POSITION, AND REINSTALL THE ACTUATOR ON CERTAIN VEHICLES. THESE VEHICLES MAY HAVE BEEN BUILT WITH AN INCORRECT A/C VENT ASSEMBLY. THIS CONDITION WILL PREVENT ADEQUATE HEATING AND COOLING FOR PASSENGERS IN THE REAR SEATS. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.