Service bulletins for the 2004 Hummer H2
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.
748 on file from NHTSA, as of 2026-10-19.
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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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| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| PIT3330G | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary Information communication provides information to the technician about customers may inquire about the availability of the passenger compartment air filter. Dealer should advise the customer starting in 2003 the passenger compartment air filter is no longer available as a factory option. For vehicles that are 2007 and later a cabin air filter may be able to be added. Refer to the latest version of PI1216. |
| PIT3330F | 2017-08-15. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary Information communication provides information to the technician about customers may inquire about the availability of the passenger compartment air filter. Dealer should advise the customer starting in 2003 the passenger compartment air filter is no longer available as a factory option. |
| 609 | 2005-09-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. A/C LOW PRESSURE SWITCH DIAGNOSIS. *SC |
| 040138015 | 2005-03-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. DIAGNOSTIC INFORMATION FOR MOAN GROAN OR BOOM NOISE AT IDLE VIBRATION IN STEERING WHEEL OR FELT THROUGH FLOOR WHEN AC COMPRESSOR ENGAGES DO NOT REPLACE AC COMPRESSOR. *EH |
| 040138014 | 2005-03-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HIGH PITCHED TONE HEARD INSIDE VEHICLE WHEN AC COMPRESSOR IS ENGAGED. *EH |
| 040138013 | 2005-03-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC NOT COLD ENOUGH A/C COMPRESSOR DOES NOT ENGAGE . *EH |
| 990138006A | 2005-03-07. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. J-43600 ACR 2000 ESSENTIAL REFRIGERANT RECOVER/RECHARGE EQUIPMENT. 1993-2005 PASSENGER CARS AND LIGHT TRUCKS. *TT |
| 010138006B | 2005-02-11. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. CONTAMINATED R134A A/C SYSTEMS - AIR CONDITIONING SYSTEM FLUSHING PROCEDURES AND GUIDELINES. INCLUDING 1993-2004 PASSENGER CARS AND LIGHT DUTY TRUCKS. *EH |
| 040139009 | 2005-01-10. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR. HVAC BLOWER MOTOR INOPERATIVE OR STAYS RUNNING. *TT |
| 040138010 | 2005-01-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. DIAGNOSTIC INFORMATION TO ACCURATELY DIAGNOSE A/C LOW PRESSURE SWITCH USING NEW KENT MOORE SPECIAL TOOL GE-47742. *TT |
| 040848001 | 2005-01-03. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. REAR WINDOW DEFOGGER - BROKEN HEATING GRID DETECTION METHOD. 2004 AND PRIOR PASSENGER CARS AND LIGHT DUTY TRUCKS. *TT UPDATED *EH |
| 010138006C | 2004-11-22. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. CONTAMINATED R-134A AIR CONDITIONING SYSTEMS -AIR CONDITIONING SYSTEM FLUSHING PROCEDURES AND UNIVERSAL IN-LINE AIR CONDITIONING FILTER INSTALLATION. 1993 - 2005 PASSENGER VEHICLES AND LIGHT DUTY TRUCKS. *TT |
| 3179 | 2004-11-08. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AUTOMATIC DUAL ZONE HVAC BATTERY DRAW SUPPLEMENT TO 02-01-39-007A. *TT |
| 02080 | 2004-07-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. REPEAT HVAC ACTUATOR REPLACEMENT. *TT |
| 01704 | 2004-05-03. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. PROGRAMMING CONTROL HEADS - HVAC AC. *TT |
| 030138019 | 2004-03-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. UNDERHOOD AIR CONDITIONER RATTLE NOISE HEARD ON ACCELERATION OR A SUDDEN LOSS OF AIR CONDITIONER SYSTEM PERFORMANCE. *TT THIS BULLETIN REPLACES 03-01-38-019 DATED 11-01-2003. TO INCLUDE VARIOUS MODLES INCLUDING 2002-2004 COMMERCIAL UPFITTER CHASSIS VEHICLES. *TT |
| 030848006 | 2003-12-03. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. REPAIR INFORMATION FOR RECONNECTION OF REAR WINDOW DEFROSTER CONTACT OR TAB. 2000-2004 LIGHT AND MEDIUM DUTY TRUCKS AND 2003-2004 HUMMER H2 WITH ELECTRIC REAR WINDOW DEFROSTER. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.