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December 1, 2011 Service bulletin

Hummer: recall bulletin pertaining to the erosion of the mat support material inside catalytic converter...

Hummer technical service bulletin RB-11223 for 2007 Hummer H2.

Bulletin number
RB-11223
Component
Engine and engine cooling: exhaust system: emission control: catalytic convertor
Summary
Hummer: recall bulletin pertaining to the erosion of the mat support material inside catalytic converter assembly and may cause malfunctioning of indicator light, noise and/or performance reduction in engine.

Owners of these vehicles have filed 2 complaints in the engine category.

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