avalonandl
Full Access Member
The LS engines are pretty smooth running I doubt the increase in vibration will be noticeable.
Broken Motor Mounts
- Thread starter osidesurfer365
- Start date
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I doubt you’ll notice. It’s the same type, solid rubber, that the previous generation has. The ones that have noticeably more vibration would be the the solid aftermarket mounts that have no rubber at all, like the ones made by Atomic Fab. And none of them cause noise lol.
iamdub
Full Access Member
This is what I don't understand- If the original one broke and the replacement (or even the replacement's replacement) broke in short order, why keep paying to install the same?
iamdub
Full Access Member
If there is any detectable increase in vibes, they will only be when idling. I promise you, possibly feeling a shake ever so often at idle is far less painful than replacing the mount once or twice or thrice...
I know huh
The definition of insanity is doing the same thing over and over again and expecting a different result. (Quote is sometimes attributed to Albert Einstein but that's not been proven.)
Greg Kulbick
Full Access Member
Good info in this thread, I just ordered an H3 mount for the 07 Tahoe my wife is driving. I'll be glad to have that fixed.
KMeloney
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Please report back on your results with the H3 mount.
Greg Kulbick
Full Access Member
Successful install. Toughest part was getting the right combination of extensions and wobble. Most surprising thing was how much more I had to jack the motor up to fit the new one in. Don't turn wrenches much anymore, I'm gonna hurt tomorrow.
22YukonDenali22
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Hey All,
I've read enough to know to go the H3 route! My 2008 Yukon Denali RWD's passenger mount is bad...but the driver's side is completely fine?? I thought usually it was the other way around? Maybe the driver's was replaced by a previous owner (I've owned it for 25k miles, it now has 97k on it). I can't see a part number on the driver's mount, other than a circle with a "15" etched on one side. I did the brake test... In drive, no engine movement; in reverse, the passenger side jumped up 3 inches. I get a lot of vibration at idle, but no other symptoms. So the question: do I just replace the passenger now with an H3, replace both now with H3's, or wait til the driver's fails, then replace both with H3's?
I've read enough to know to go the H3 route! My 2008 Yukon Denali RWD's passenger mount is bad...but the driver's side is completely fine?? I thought usually it was the other way around? Maybe the driver's was replaced by a previous owner (I've owned it for 25k miles, it now has 97k on it). I can't see a part number on the driver's mount, other than a circle with a "15" etched on one side. I did the brake test... In drive, no engine movement; in reverse, the passenger side jumped up 3 inches. I get a lot of vibration at idle, but no other symptoms. So the question: do I just replace the passenger now with an H3, replace both now with H3's, or wait til the driver's fails, then replace both with H3's?
