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Message: <blockquote data-quote="ORVietVet" data-source="post: 20154" data-attributes="member: 9438"><p>The more I drive the new to me 2004 K2500HD crew cab 6.0 truck, the more I am curious about. Starts just fine and no problems at idle. When just as start to accel from stop, there is a very very slight exhaust vibration feel/sound at the rear and goes away as accel harder/faster. It does not sound/feel like a shield. I just thought that other owners here might be aware of a certain resonance in the older stock exhaust system. I will be getting under for an inspection but thought I would post here first to see if there is something like this that someone else says, "Always does this or that because of this or that". Thanks in advance.</p></blockquote><p></p>