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Service bulletin 99088A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id613594
Published by NHTSA2000-07-25
Manufacturer's number99088A
Manufacturer's date2000-04-27
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

VOLUNTARY EMISSION CAMPAIGN INVOLVING VEHICLES EXHIBITING SYMPTONS RESULTING IN THE ILLUMINATION OF THE CHECK ENGINE LIGHT OR THE ENGINE RUNNING ROUGH. **MR

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
CHEVROLET CAVALIER1995, 1996
PONTIAC SUNFIRE1995
PONTIAC SUNFIRE1996

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20001092000-04-28. Engine
19990161999-02-15. Engine
19951881995-10-20. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
1300890092023-12-11. Service bulletin. Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
0106020122002-03-21. Service bulletin. SOME OWNERS MAY COMMENT ON LEAKAGE OF A FEW DROPS OF COOLANT AFTER PARKING THEIR VEHICLE. *TT
980542000-12-27. Service bulletin. GENERAL MOTORS HAS DETERMINED THAT SOME VEHICLES EQUIPPED WITH 2.2 LITER ENGINES MAY DEVELOP A FAILURE OF THE CYLINDER HEAD GASKET LEADING TO EXTERNAL COOLANT LEAKS FROM THE CYLINDER HEAD GASKET TO ENGINE BLOCK JOINT. *TT
980542000-07-25. Service bulletin. SUBJECT REGARDING ADDTIONAL INFORMATION FOR SPECIAL POLICY 98054 - COOLANT LOSS, VISIBLE COOLANT LEAKAGE, OR COOLANT ODOR. **MR
000102000-07-25. Service bulletin. SOME CUSTOMERS MAY EXPERIENCE A FAILURE OF THE CYLINDER HEAD GASKET LEADING TO EXTERNAL COOLANT LEAKS FROM THE CYLINDER HEAD GASKET TO ENGINE BLOCK JOINT. **MR
99088A2000-06-12. Service bulletin. VEHICLES EXHIBIT SYMPTOMS RESULTING IN THE ILLUMINATION OF THE CHECK ENGINE LIGHT OR THE ENGINE RUNNING ROUGH (INSPECTION, CLEAN/REPLACE AND SEAL PCM, AND INSTALL PROTECTIVE PCM SHIELD ASSEMBLY). *MJS
99088REV2000-06-09. Service bulletin. INFORMATION REGARDING ADDITIONAL CORRECTIONS FROM PRIVIOUS CAMPAIGN 99088, CONDITIONS THAT CONCERN ROUGH RUNNING ENGINE AND CHECK ENGINE LIGHT ILLUMINATION. MJS
98054A1999-09-30. Service bulletin. SOME VEHICLES MAY DEVELOP A FAILURE OF THE CYLINDER HEAD GASKET LEADING TO EXTERNAL COOLANT LEAKS. *TT
636604C1999-03-08. Service bulletin. COMMENTS THAT A METALLIC NOISE OR COLD RAP HEARD ON COLD EXHAUST SYSTEM. *TT
980541999-02-26. Service bulletin. SOME VEHICLES MAY DEVELOP A FAILURE OF THE CYLINDER HEAD GASKET LEADING TO EXTERNAL COOLANT LEAKS FROM THE CYLINDER HEAD GASKET TO ENGINE BLOCK JOINT. *YC