Muffler vibrates (rattles) as I reach 45 mph, then it stops?

Asked by Apr 26, 2015 at 09:55 PM about the 2009 Dodge Ram 1500 ST Quad Cab

Question type: Maintenance & Repair

1 Answer

105,255

Check to see if your muffler has a shield on it, a corner could have broke loose and causing the problem. My GMC was doing that and it's shield had popped loose so I got 4 large hose clamps and clamped the shield back into place, rattle is gone.

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