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Old 03-05-2012, 09:02 AM
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Rocks in the skid plates

My 2012 JGC Overland Summit gets driven about 15 miles every day over a fairly rough, steep, gravel/dirt road. In 4 months, it's gotten two rocks on top of the skid plates.

The first rock was maybe 4" x 2" x 1" and caused quite a bit of consternation - it made nasty clunking noises and then got jammed between the transmission and the skid plate which caused the whole car to vibrate. We didn't realize it was a rock, took it to the dealer, and the mechanic finally found the rock on the second visit (he at first thought it was a "major transmission problem").

The second rock was slightly smaller and I was able to fish it out by cranking the Quadralift suspension up high and groveling underneath.

I wrote this for two reasons:
(1) If you hear clunks or get nasty vibrations, it might just be a rock on the skid plates.
(2) Has anyone else had this happen? I suspect that I might be pulling rocks out regularly. I've never had this happen on other vehicles.
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Old 03-05-2012, 10:54 AM
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Re: Rocks in the skid plates

I haven't noticed it yet but have not been on many gravel roads yet. I suspected this might be a problem though when I first bought the vehicle and crawled under it. I already plan on taking the skid plates off once a year or so and cleaning them out.
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Old 03-06-2012, 04:17 PM
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Re: Rocks in the skid plates

I've had lots of small rocks under the skids, but nothing of that size. I've been able to push them out pretty easily
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Old 03-09-2012, 03:30 PM
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Re: Rocks in the skid plates

Yes, I've had that happen once in ten months and 11,000 miles. I have a 1000-foot gravel driveway that's not in great shape. One day I started the car and heard the same "major transmission problem" sound. The service department at my dealership took only a couple of hours to figure out it was a rock jammed between a skid plate and a casing. There was no damage.
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Old 05-26-2012, 12:59 AM
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Re: Rocks in the skid plates

I took my Summit off road last weekend up in Santa Barbara (Big Caliente Springs)

Tire kicked up a rock the size of a small charcoal briquet. I actually heard the strike when the tire kicked it up, but didn't think it landed on top of the skid.

On the way home I had this metallic banging noise over any bump and I knew that rock was the one that was making the racket.

I ended up getting the rock out this morning and it's sitting on my kitchen counter.

Luckily I didn't have to remove any of the skids, I just banged my hand on the skid plate until the rock ended up at the rear and I pulled it out (luckily my driveway has a pretty good angle so that made it easier)
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