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Service bulletin 476006A

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 id45850
Published by NHTSA1996-04-25
Manufacturer's number476006A
Manufacturer's date1995-06-01
Replaces47-60-06
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

POPPING/FLUTTERING/TICKING/SPARK KNOCK/CLUNKING NOISE WHILE DRIVING UP MEDIUM GRADES OR ACCELERATING FROM A STOP (REPLACE EXHAUST SEAL OR RIGHT EXHAUST MANIFOLD).*SD

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, Exhaust manifold, pipes and muffler

Vehicles listed
BUICK PARK AVENUE1995
BUICK RIVIERA1995
OLDSMOBILE 881995
OLDSMOBILE 981995
PONTIAC BONNEVILLE1995
PONTIAC PONTIAC1995

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

Other bulletins for the same vehicles and component
0406010172004-08-02. Service bulletin. NEW UPPER INTAKE MANIFOLD AND GASKET KITS. *TT