Which Motor Mounts

[Geotrash]

Hum. So would you suggest just replacing all of the valve springs to prevent a failure?

That's what I did with my 2012, but it was part of a cam swap so I needed to change them anyway. But, fear of one failing is part of what caused me to make the investment.

Lots of folks running around with 200K+ 6.2's that haven't broken a valve spring. So, at 139K I would say the odds are still remote, and will remain so even as you cross 165K some day, but they're also not zero.

150K is a nice time to do a bunch of heavy maintenance on these. This might be one of those items. Then, enjoy for the next 150K miles.

 

[petethepug]

I just replaced the OEM hydro mounts on our 09 6.2 @ 170k. Not recommended to wait that long but with AWD, it allowed $4k worth of work to be completed for $1.5k when I had the trans rebuilt.

With the trans pulled for either a 100k mi or later major service or replacement, the motor & trans mounts, front diff mount bushings and brackets and oil pressure switch are practically free labor. Did the pan gasket as well as F/R diff service too for that same $1.5k price.

One weak link in the 6.2 is that failure to replace all the drive train isolation bushings and mounts will result in short life’g the newly replaced ones mixed with old ones. We learned from our 08 YXL Denali. With the 09 6.2, the above parts were replaced with OEM GM, the same hydro mounts, all at once. We’re good for another 75k mi min now that it’s been done correctly.

 

[Monz11]

Yes, you could go with Hummer mounts, but these are well worth the upgrade, since you are pulling and no worries on future leaking. These are polyurethane, so no liquid filled crap. Atomic Fabrication and Performance the way to go!

Motor Mounts Archives - Atomic Fabrication

These are solid and polyurethane motor mounts for 99-18 GM trucks and TrailerBlazer SS SUVs

atomicfabandperformance.com

 

[Monz11]

Oh and this is the guy who makes the trucool trans cooler mounts, too!!

 

[petethepug]

How are you liking the poly mounts on your truck?

 

[12GMCYukon]

Trying to decide between the H3 mounts or the poly mounts. Is the vibration with the poly mounts really that bad?