Service bulletins for the 1998 Pontiac Trans Sport
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.
70 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
| 000138011A | 2002-10-11. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SUBJECT REGARDING POOR HEAT WITH COLD OUTSIDE TEMPERATURES AT LOW ENGINE RPM. *TT |
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| 000138011B | 2002-10-10. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SUBJECT REGARDING POOR HEAT WITH COLD OUTSIDE TEMPERATURES AT LOW ENGINE RPM. *TT |
| 000138011 | 2001-03-24. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SOME CUSTOMERS MAY COMMENT ON POOR HEAT IN THE VEHICLE PASSENGER COMPARTMENT AT LOW ENGINE RPM. THIS CONDITION IS MOST PREVALENT AT OUTSIDE TEMPERATURES BELOW 0 DEGREES C (32 DEGREES F). *TT |
| 000138001 | 2000-04-06. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. SOME CUSTOMERS MAY COMMENT ON A LACK OF PERFORMANCE OF THE AIR CONDITIONING SYSTEM IN HOT HUMID WEATHER. *TT |
| 831220 | 2000-04-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. A/C COMPRESSOR CLUTCH IS ENGAGED. THIS CONDITION IS MOST NOTICEABLE WHEN ENGINE IS AROUND THE 1000-2000 RPM RANGE. THE NOISE MAY BE LODEST WHEN THE ENGINE IS UNDER LIGHT ACCELERATION THROUGH THIS RPM RANGE. THE MOAN NOISE MAY BE CREATED BY COMPRESSOR PULSES WHICH SET UP A SYSTEM RESONANCE BETWEEN THE COMPRESSOR AND THE IN-LINE MUFFLER. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.