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SS-Guru 馃弲TOTM, HowTo Author,馃Mbr Extraordinaire,
2010 GMC All Terrain 4x4 5.3 LC9 211k mi
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They will be a lot more stiff than stock ones. I don't know if that is a big deal or not for body mounts.
 

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2015 GMC Sierra 1500 4x4 leveled and 2015 GMC Sierra 1500 2wd lowered.
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I always heard that polyurethane stiffens in really cold temps and squeak a lot. They do perform better than rubber in normal temps.
 

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01 Silverado 1500 4.3
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Discussion Starter · #5 ·
Hmmm. I鈥檝e used polyurethane suspension bushings in other vehicles. At those times I also remember the potential for squeaking. I just used that silver anti seize compound when I installed them. I mean not only on the bolt threads but also where the bushing material touches other metal. I don鈥檛 remember ever having squeaking problems when I installed like that.
 

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1999 Silverado LT LQ4 2006 Sierra SLT LBZ
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There is an updated GM part number on body bushings. I can't remember what it is though and don't know what vehicles it applies to.
 

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Good bushings cost money. OEMs are $65/each, give or take.

I recently had mine replace with a premium set from SBS Suspension, a silicone bushing. It makes a world of difference...then again, I was driving without any functional mounts for years, so adding anything would have helped me...lol
 

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01 Silverado 1500 4.3
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Discussion Starter · #8 ·
I like those silicone bushings but they cost at $450 for the set is killing my dream on them.

On the polyurethane bushings I could control squeaking with anti seize compound but the poly is harder than the OEM rubber. More durable but a harsher ride. I鈥檒l pass on those.

So OEM rubber looks like the way. My standard cab has 2 radiator support bushings and 4 under the cab. Are the ones on the cab all the same because they look like it in pictures? However the part numbers are different for positions 1 and 2.
 

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01 Silverado 1500 4.3
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Discussion Starter · #9 ·
I have OEM style on my bench now. Dorman brand. Total for all 6 would be $430 on amazon. Heck, why not get the S&B silicone bushing kit for that matter?

924-130 radiator support -- 924-135 position 1 -- 924-134 position 2 > I compared these three part numbers and all of the upper bushings and lower cups are identical. The bolts are different on the rad support position but everything else is identical as far as I can see with my own eyes and feel in my hands.

Theres another option for OEM rubber style. Ultra Power sells what they list as 924-135 in a 2 pack for $55 including hardware. Since I have determined that positions 1 and 2 are actually the same, I can get all 4 OEM rubber style cab mounts for $110. Ultra Power also sells a 2 pack for the radiator support mounts for $52 including hardware.

I have the Ultra Power parts on order and Ill compare them to the Dorman when they get here. I'll post back what I find.

If the Ultra Power pieces look comparable to the Dorman, I might be going that route.

Amazon.com: 2PCS Body Mount Kit For 2001-2019 Cadillac Escalade For Chevy Silverado 1500 2500 3500 Tahoe For GMC Sierra 1500 2500 3500 Yukon : Automotive

 

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01 Silverado 1500 4.3
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Discussion Starter · #10 ·
I鈥檓 not sure where these big washers with the 4 ears are supposed to go. On top, on bottom or what? Also, with each mount came two of these. One is about twice as thick as the other. Why?

Automotive tire Wood Tire Tread Gas

Finger Nickel Bumper Bicycle part Eyewear

Gas Circle Audio equipment Metal Wood

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01 Silverado 1500 4.3
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Discussion Starter · #12 ·
Unfortunately I have discovered I also need these.

 

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01 Silverado 1500 4.3
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Discussion Starter · #13 ·
Also, the second batch of body mount bushings, the ones made by Ultra Power I am returning. Mainly because the rubber is noticeably softer and the metal slightly thinner and they may squash down too much. I鈥檓 going to pay a little extra and go with Dorman OEM design.
 

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01 Silverado 1500 4.3
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Discussion Starter · #14 ·
I think the purpose of those large eared washers are to allow slight lateral movement of the bushing without any binding. It prevents a popping noise that is sometimes heard when cornering
 

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01 Silverado 1500 4.3
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Discussion Starter · #16 ·
You sure they aren鈥檛 just locators?
Actually no, I鈥檓 not sure they aren鈥檛 just locators. I鈥檒l find out when I pull my old bushings off. If there鈥檚 a boss on the frame around the hole that locks them in, then maybe they are locators. If there鈥檚 no boss and just a hole, they won鈥檛 do jack diddly to locate anything. I鈥檒l post back once I pull it apart. I鈥檓 still gathering everything I need which now also includes 4 repair plates and one entire body mount bracket.

 

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01 Silverado 1500 4.3
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Discussion Starter · #18 ·
I was just reading on the dmax forum someone was doing body mounts and he said they were locators. Not sure though
I will let you know and take pictures of the body rail when I pull the bushings out. The hole in the center of the parts we are discussing is way way larger than the bolt. I say if there鈥檚 no raised boss that fits that hole like a glove, they won鈥檛 function as locators, regardless of what people might call them.
 
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