Service bulletins for the 1999 GMC Sierra
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.
282 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
| 040139007 | 2005-02-17. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. LOSS OF HEATING VENTILATION AIR CONDITIONING. SYSTEM MODE AND OR TEMPERATURE CONTROL. *EH |
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| 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 |
| 3086 | 2004-10-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONER (A/C) LOW PRESSURE SWITCH DIAGNOSTIC TOOL. CURRENTLY THE A/C LOW PRESSURE SWITCH OPEN/CLOSE PRESSURES CANNOT BE ACCURATELY DETERMINED BY MEASURING PRESSURE AT THE LOW SIDE SERVICE PORT. *TT |
| 010139007 | 2002-03-21. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SUBJECT REGARDING LOSS OF HVAC SYSTEM MODE AND/OR TEMPERATURE CONTROL. *TT |
| 010139007 | 2002-03-21. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A CONDITION MAY EXIST WHERE THE CUSTOMER CANNOT CONTROL THE HVAC SYSTEM MODES AND / OR THE TEMPERATURE. *TT |
| 080101 | 2001-04-06. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SOME CUSTOMER MAY COMMENT THAT THE WINDOWS DO NOT DEFROST ON A TIMELY BASIS. *TT |
| 120299 | 1999-04-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. CUSTOMERS MAY COMPLAIN OF COOLANT LEAKS, LOW COOLANT LIGHT 'ON', OVERHEATING, NO HEAT, NO START, OR ODORS EMITTED FROM THE AIR CONDITIONING SYSTEM. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.