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Discussion Starter #1
I bought a grill guard for my 04 1500 Z71. It was very easy to install but even when driving down the highway I can see it vibrating. I had one that was similar on my Trailblazer before I traded it in and it never did this. I was wondering if this is just a problem I am going to have to live with or can I get something to stop it. It's not damaging the truck at all but it is a distraction while driving. I took it off until I can think of a way to make it stop.
 

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i got the got rhino version and i found i had to put a support brace actually two new 3" longer bolts to attach the upper frame just on top of the bumper ... what I used was 1" thick nylon washers from home depot to pickup the slack and the vibration was gone on mine and also re-tightened the main bolts on the bottom of the grill where it's attached to the bottom of the bumper
 

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Almost every grill guard that attaches to the bumper vibrates.
The best way to stop the vibration is to engineer attaching points directly to the frame. This is a common problem in the engineering of grill guards, by attaching to the bumper they're easier and cheaper to manufacture and easier to bolt on the vehicle.
 

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Actually the one I have is attached to the frame on the bottom. I think the weak point is the brackets used to attach it to the top of the bumper under the top cap for it. I have tried almost everything to make it stop. Bigger bolts helped some. I may just stick with the bull bar that I put back on. It's amazing, when I have nothing on the front other cars cut me off all the time and when I have the guard on there, no one dares to. I guess they figure if I crash into them instead of slamming on the brakes it will do more damage to them than to me.
 

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Actually the one I have is attached to the frame on the bottom. I think the weak point is the brackets used to attach it to the top of the bumper under the top cap for it. I have tried almost everything to make it stop. Bigger bolts helped some. I may just stick with the bull bar that I put back on. It's amazing, when I have nothing on the front other cars cut me off all the time and when I have the guard on there, no one dares to. I guess they figure if I crash into them instead of slamming on the brakes it will do more damage to them than to me.
LOL. I used to have an NRA bumper sticker on a car I drove ... people quit tailgating me. ;-)
 

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mine used to be tight with no vibration at all, but i started to hit alot of stuff with it for fun (trash cans,baskets,cones) and after plowing all of this stuff it vibrates a little now, i have never tried to re-tighten it yet cause im lazy so i dont know if i broke something or its just loose
 
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