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April 1, 2004 Service bulletin

The exhaust valve stem may become deformed which could lead to valve train clatter noise. customer...

Isuzu technical service bulletin 04029 for 1999-2001 Isuzu NPR, 1999-2001 Chevrolet W3500 and 1999-2001 Chevrolet W4500 and others.

Bulletin number
04029
Component
Engine and engine cooling: exhaust system
Summary
The exhaust valve stem may become deformed which could lead to valve train clatter noise. Customer satisfaction program. Tt

Owners of these vehicles have filed 3 complaints in the engine category.

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