I am experiencing a rattling that appears to be coming from the passenger side of the enging that only happens when hard excelleration 0-50 and at speeds over 75. I have changed the belt tensioners as well as checked the fan shroud. Any ideas of other things that could be causing the rattle?

 

motor mount? heat sheild on the manifolds, bad tire... or does it sound like its coming from in the engine?

 

Definetly from the engine. Motor mount has been fixed as well. Will consider heat sheiled on manifolds. New tires so that is out.

 

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Have you been able to resolve this issue? The vehicle is still under warranty correct?

Louis
GM Customer Service

 

Not resolved yet and no the vehicle is not covered under any warranty

 

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I have researched my resources and there are currently no known issues, based on your description. I encourage you to consult with a certified technician for an inspection. They should be able to offer additional information after inspecting the vehicle.

Please keep us posted.

Louis
GM Customer Service