Ramblin' Ralph
Central California Coast
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On one of my wheels, 4 of the nut covers have come off. In addition, I can't keep most of the others tightened for more than a couple of hours of driving. If I try to tighten them firmly, they slip and I have to tighten again (but not as much).
I've found where I can buy some replacements, but wonder why they keep coming loose? Also, what do the nut covers actually thread onto? Looks like it has to be the nut.
Anyone else having the problem?
Thanks,
Ralph
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ktmrfs
Portland, Oregon
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they are plastic and thread onto the lug nuts. My guess is that at some time, someone overtightened them and stripped the plastic threads. they don't need to be that tight. there are 4 notches on the hub that will keep the plastic nut from turning. My 04 is doing fine, 100K miles, and tires are rotated twice/year and studless tires in the wintertime, so plenty of cap changes.
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downtheroad
Pacific Northwest
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Ours have never given us any trouble...finger tight only.
The "real" lug nuts are underneath. They get torqued to 140 ft. lbs.
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Dave H M
IL
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I had that problem once.
My theory was that the tire techie spun em with the impact wrench.
But how can you prove that?
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powderman426
ohio
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Have you considered replacing the open nuts with chrome acorn nuts? Just asking.
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AdirondackBob
Bolton Landing, New York
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Put a dab of silicone on them and they should stay.
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RedG
Fort Worth Texas
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Probably some tire monkey spun them on with an impact wrench and ruined them.
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1slomofo
Corona
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same thing to me... someone rotating my tires spun every single one of them with the impact...
just as a another member mentioned.. dab of 100% clear silicon...the perfect fix
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Ramblin' Ralph
Central California Coast
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Thanks for the feedback.
Lost another one today (total 5), coming back from camping. So I took the plastic "hubcap" off until I can get new nut covers. I'm sure since it says "GMC" it would cost me a bunch. 
I did just have a new set of tires put on. Strange, though, that all the missing covers are on one tire.
I'll try the silicone trick for sure.
Thanks,
Ralph
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wthibeaux
DeKalb, TX
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When you say silicon, do you mean the silicon caulk? I have lost one of the hubcaps because the nuts came loose. Right now, the hubcaps are in a box in my garage. Chevrolet charges around $80 for new ones, and I don't intend to pay that.
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