Question about 2006 Chevrolet Colorado

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Truck idles noisily and shakes when driving or when still

My truck idles very irratically and is noisy. You can feel the vibrations on the floorboard and on the gas/brake pedals and on the sterring wheel. This happens wheter the truck is idle or moving

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I had a similar probelm but mine would get really bad at around 2300 RPM and it was just noticable at idle.. My fix was just below the exhaust manifold there is an elbow which is covered by a heat shield. When I observed the shield it wrapped around the bottom of the elbow and was spot welded to the exhaust pipe only at the 4 corners(so it was kinda in the shape of a U) because the rest of it was open, dirt and sand collected in here and caused the noise and vibration that I was hearing/feeling. After observing the area and talking to a GM mechanic I removed the shield completely. Theres nothing there that could burn or any heat sensitive parts for that matter, and it did not cover the top anyway so it wasn't to protect the paint. I hope this helps

Posted on Oct 26, 2008

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