Broken Motor Mounts

[mikez71]

little space at the bottom in there? idk

To add to the H3 mount reviews..

There are small vibrations through the steering wheel and brake pedal at times, low rpms, near idle.
Feels more like a typical 90's vehicle. If you want Lexus smoothness, or to save some bucks, get stock fluid filled.

No regrets at all, I prefer the durability here, just know there is a little tradeoff.

 

[j91z28d1]

little space at the bottom in there? idk

To add to the H3 mount reviews..

There are small vibrations through the steering wheel and brake pedal at times, low rpms, near idle.
Feels more like a typical 90's vehicle. If you want Lexus smoothness, or to save some bucks, get stock fluid filled.

No regrets at all, I prefer the durability here, just know there is a little tradeoff.

oh yeah. I still need to order and do the passengers side. but other than no longer having the click/clunk when starting. I haven't noticed any negatives to the hummer mount on a hybrid. since they don't idle when stopped very often, harder seems to be just fine.


I gotta get that 2nd one ordered. I see a bit of timing retard under certain conditions and before I run some hpt logs to try and tune it out, I wanna make sure it's not the motor sitting on the hard cross pin on that side the knock sensors are hearing. I put some 93 in it and didn't see any change, so my theory is all these bad mount aren't great for the timing either since it's basically metal to metal on the mount once it rubber rips

 

[Chevymec]

My drivers side has been busted for a few years now, and I've had a GM one sitting in the shop to replace it with. One day it will get done.

 

[Campbesl]

I just did this project. At the same time, I also replaced the transmission mounts and I replaced the front sway bar bushings and links. My two teenage boys helped me and they like when I write instructions so that they can make progress when I'm busy working or grabbing another beer. So I created a DIY write up and made notes during the work. I just updated my DIY and am posting it here in the hopes that it will be useful to others who follow.

Please note that I started by plagiarizing an earlier DIY write up so some of the text may look familiar. Also, I'm sure that I have typos and other problems. Message me if you catch anything that needs fixed and I'll update and repost.

GOOD LUCK!

Scott

 

[mikez71]

Another option for mounts. Same style as atomfab and summit, but prettier.

07-13 GM Truck/SUV Motor Mounts 4130 Tig Welded | Izzy Fab

Replace stock motor mounts with these bolt on heavy duty replacements! 4130 TIG welded construction not mild steel like other companies.

www.izzyfab.com

 

[SC-Tahoe]

do yall recommend pulling H3 motor mounts from a junk yard or buying new? my local yard has 2 08's and an 09.

 

[dkad260]

do yall recommend pulling H3 motor mounts from a junk yard or buying new? my local yard has 2 08's and an 09.

Our motor mounts are not the most difficult, but they're not very enjoyable to change either.

Given the effort, I want them to last..so my vote is new. Keep in mind a few users have noticed that the H3 mounts compared to the stock have an ever so slight feeling of vibration through the steering wheel and they just don't dampen as much as the original. Those findings are mixed, and it's a very small difference.

 

[mikez71]

That's a great idea, I bet you would save a considerable amount..
I don't remember motor mounts going bad on older cars? (I'm sure they do, I just don't ever remember needing one before)

If they look good, maybe you can sell them if you don't use them.

 

[SC-Tahoe]

Our motor mounts are not the most difficult, but they're not very enjoyable to change either.

Given the effort, I want them to last..so my vote is new. Keep in mind a few users have noticed that the H3 mounts compared to the stock have an ever so slight feeling of vibration through the steering wheel and they just don't dampen as much as the original. Those findings are mixed, and it's a very small difference.

thanks

 

[OR VietVet]

I personally would not want to climb around on the ground getting used and then do the same on yours to find out that should have been new.

 

[SpareParts]

I remember blowing through dr motor mounts on a Mercury Maurder i had way back. 429 still my favorite engine!.

Not mine but near an exact match.

 

[j91z28d1]

That's a great idea, I bet you would save a considerable amount..
I don't remember motor mounts going bad on older cars? (I'm sure they do, I just don't ever remember needing one before)

If they look good, maybe you can sell them if you don't use them.

they definitely didn't, the old clam shell type of gm mounts lasted a life time. they might have sagged a bit over time. but they didn't pull apart like these do.

the solid rubber h3 mounts are crazy expensive and solid rubber. if you don't mind doing the work, saving 600$ to have most likely good mounts. I wouldn't tell anyone not to do that. I still only have a drivers side mount on mine cause I can't bring myself to paying 300plus for the passenger side which property isn't bad haha.

 

[alpha_omega]

they definitely didn't, the old clam shell type of gm mounts lasted a life time. they might have sagged a bit over time. but they didn't pull apart like these do.

the solid rubber h3 mounts are crazy expensive and solid rubber. if you don't mind doing the work, saving 600$ to have most likely good mounts. I wouldn't tell anyone not to do that. I still only have a drivers side mount on mine cause I can't bring myself to paying 300plus for the passenger side which property isn't bad haha.

They’ve gone up that much? Yikes! I paid less than that for both of mine. Heck, I paid less than that for the Denali mounts and the H2 mounts. I wasn’t sure which ones I wanted and the H2 were just a little too much for my liking. Hopefully the Denali mounts will keep my new dash from cracking.

 

[Denali2k8]

Anyone tried or have input with the Speed engineering motor mounts? Even with the upgraded bushings they are still cheaper than going OEM.

I stumbled across them while looking at their shorty manifolds to replace my stock ones.

2008 Yukon Denali w/ 170k miles. Just getting into some maintenance stuff, which is still cheaper than a car payment! Lol

 

[KC 2013 Tahoe]

Anyone tried or have input with the Speed engineering motor mounts? Even with the upgraded bushings they are still cheaper than going OEM.

I stumbled across them while looking at their shorty manifolds to replace my stock ones.

2008 Yukon Denali w/ 170k miles. Just getting into some maintenance stuff, which is still cheaper than a car payment! Lol

Or try these for $179 + $9.99 shipping:
The $175 savings will buy a lot of black engine enamel spray paint

2008-2013 GMT 900 Silverado/Sierra Stout Urethane Engine mounts set Part# 16027A

LS1 LS2 LS3 LS6 LSX LQ4 LQ9 4.8 5.3 6.0 6.2 LASER CUT STEEL URETHANE ENGINE MOUNT KIT REPLACE YOUR BROKEN GM V8 ENGINE MOUNTS IN YOUR SILVERADO/SIERRA Part Number: 16027A Item Finish: Unfinished Steel Our Price: $179.99 Shipping: 9.99 All Sales in Michigan must pay the 6%...

metaltek-manufacturing.myshopify.com

 

[testdepth]

So I just returned from my mechanic after a routine oil change and he shows me I have a cracked drivers side motor mount!!!! WTF... I mean seriously GM? You would think they would install a strong enough motor mount for what people use these SUV's for. My mechanic ony works with GMC and Chevy's and he said he is noticing this often.

Has anyone else experienced this problem?

Oh and cause where it is located, not the cheapest of repairs either..

I just replaced both of my motor mounts in my 2012 Yukon Denali 1500 XL with 6.2L. Both were shot. That's when I found out GM motor mounts are oil filled. Easy to diagnose: Hood open, have someone start the truck and press the parking brake, shift to drive and give it a little gas while a 2nd person watches the engine. Very noticeable if they are bad as the engine picks up due to the torque. (7) 15mm bolts for each one and you'll need a jack with a block of wood under the oil pan right where the drain is.

 

[mikez71]

Anyone tried or have input with the Speed engineering motor mounts? Even with the upgraded bushings they are still cheaper than going OEM.

If they are like other aftermarket poly mounts, I have only heard positive reviews so far.
And it seems to be fairly standard for aftermarket LS mounts..