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Service bulletin 98636604B

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 id601911
Published by NHTSA1998-08-28
Manufacturer's number98636604B
Manufacturer's date1998-06-01
Replaces63-66-04A
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

COMMENTS THAT A METALLIC NOISE ON COLD EXHAUST SYSTEMS. *TT

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, Exhaust and emissions

Vehicles listed
CHEVROLET CAVALIER1995, 1996, 1997, 1998
PONTIAC SUNFIRE1995
PONTIAC SUNFIRE1996, 1997, 1998

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
19960941996-06-20. Emissions
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
040082004-08-19. Service bulletin. SPECIAL POLICY ADJUSTMENT - AIR CLEANER COVER - REPLACE. BI-FUEL (COMPRESSED NATURAL GAS AND GASOLINE) ENGINE MAY EXPERIENCE A HIGHER RATE OF BACKFIRE THAN ON GASOLINE ENGINE CAVALIERS. *TT
040082004-08-19. Service bulletin. SPECIAL POLICY ADJUSTMENT 04008 - AIR CLEANER COVER - REPLACE. *TT
010601030A2002-10-09. Service bulletin. SOME OWNERS MAY COMMENT ON HIGHER THAN EXPECTED ENGINE OIL CONSUMPTION. *TT
0106010302002-03-21. Service bulletin. SOME OWNERS MAY COMMENT ON HIGHER THAN EXPECTED ENGINE OIL CONSUMPTION, AND HAVING TO ADD OIL BETWEEN OIL CHANGES. *TT
0106020122002-03-21. Service bulletin. SOME OWNERS MAY COMMENT ON LEAKAGE OF A FEW DROPS OF COOLANT AFTER PARKING THEIR VEHICLE. *TT
0908012001-11-20. Service bulletin. CUSTOMERS MAY COMPLAIN OF EXCESSIVE OIL CONSUMPTION AND HAVING TO ADD OIL BETWEEN CHANGES. *JG
0106010042001-04-03. Service bulletin. EXHIBITING A LOUD HOOT / WHISTLING NOISE AT START UP DURING COLD AMBIENT TEMPERATURE. *JB
980172000-12-27. Service bulletin. CUSTOMER SATISFACTION CAMPAIGN INVOLVING VEHICLES EXHIBITING INCREASED OIL CONSUMPTION. *TT
980412000-12-27. Service bulletin. UPPER RADIATOR HOSE CONTACTING BATTERY TRAY. *TT