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Service bulletins for the 1999 Jeep Grand Cherokee

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.

176 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

Bulletins, newest first
24013052005-09-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONING (A/C) COOLING COIL ODOR. *TT
24001042004-03-05. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT. NEW HVAC SUB-ASSEMBLY REPLACES BLEND OR RECIRC DOOR COMPONENTS. *TT
24007012001-07-11. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A CUSTOMER MAY EXPERIENCE COLER OR WARMER THAN DESIRED AIR TEMPERATURES COMING FROM THE VEHICLE HVAC SYSTEM VENTS. THIS CHANGE IN AIR TEMPERATURE MAY OCCUR GRADUALLY OVER TIME AND ONLY ON VEHICLES EQUIPPED WITH THE AUTOMATIC ZONE CONTROL (AZC) HVAC SYSTEM. THIS BULLETIN INVOLVES THE REPLACEMENT OF THE AUTOMATIC ZONE CONTROL ASSEMBLY. *TT
2401002000-04-14. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE. CUSTOMERS MAY COMPLAIN OF COLD DRIVER'S FEET OR INADEQUATE AIRFLOW TO THE DRIVER'S SIDE FLOOR. *TT
2424992000-02-25. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. CONCERNS WITH THE HEATER A/C SYSTEM CHANGING TO DEFROST MODE WHEN ACCELERATING. *TT
240699A2000-02-24. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. INFORMATION ON CONDENSATION (WATER DROPLETS) FORMING ON THE EXTERIOR OF THE HEATER A/C HOUSING AND DRIP ON THE FLOOR. *TT
2416991999-11-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. CUSTOMERS MAY EXPERIENCE DISSATISFACTION WITH THE TEMPERATURE SETTING IN THE AZC CONTROL MODULE. *TT
2408991999-08-10. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR. CONDITIONS WITH WHISTLING SOUND FROM HEATER BLOWER. *TT
2407991999-05-21. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE. SUBJECT REGARDING REDUCED AIRFLOW FROM CENTER OUTLETS. *TT
2401991999-04-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. SUBJECT REGARDING A/C REFRIGERANT CHARGE. *TT
2402991999-04-22. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. SUBJECT ON A/C COMPRESSOR SERVICE. *TT
2406991999-04-12. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. VEHICLE EXPERIENCING CONDENSATION THAT MAY FORM ON THE EXTERIOR OF THE HEATER A/C HOUSING AND DRIP ON THE FLOOR. *TT

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