New motor mounts 2007 Tahoe

[CAA0358]

I just installed a set of solid motor mounts from MetalTek out of Michigan. After 2 weeks of Google and YouTube searches, as well as this forum I pulled the trigger on these. As you stated, there are dozens of driver's side replacement videos, but only one in the passenger side. It took about 12 hours, start to finish, but I did do some extra work.
I'll be posting a video on YouTube in a a few days or so.
My question is......... The vibration??? At about 1100+- rpms, I get a noticable vibration. Example...... Acceleration to 35 mph, in drive, 4th gear, it "Chatters". Same thing at 50+-. If I use the manual shift, kick up the rpms, it's as smooth as silk.
Any feedback!?
Here's a link to the MetalTek site.

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

 

[Miami-Dade]

@CAA0358 Moved you here from Site News.

 

[mikez71]

At 1100 rpms! I would have thought any vibrations would be (more) noticeable at low idle..

Does it ever do it in 1-3?

Check to make sure all bolts are tight...

Transmission mount?

 

[CAA0358]

At 1100 rpms! I would have thought any vibrations would be (more) noticeable at low idle..

Does it ever do it in 1-3?

Check to make sure all bolts are tight...

Transmission mount?

Regardless of gear or speed, it Chatters/vibrates at 1100. All bolts are torqued properly. I'm leaning towards the water pump. A few tell tale signs, weep hole, loose pulley.
I'll update later today.

 

[j91z28d1]

not this suv but I have harder than oem mounts on my c6 and that's how they feel. like resonate across the car as it hits the right rpm.

it's very annoying. the rubber hummer mount I put on the yukon didn't cause that, but I've only done the drivers side so far. mixture of lazy and mounts being 300$ each haha.

 

[donjetman]

I've had hummer mounts (2) for many yrs and miles, and NEVER any vibration.

 

[Marky Dissod]

My question is ... The vibration? At about 1100RpM, I get a noticable vibration. Example ... Acceleration to 35MpH, in drive, 4th gear, it "Chatters".
Same thing at about 50MpH. If I use the manual shift, kick up the MpH, it's as smooth as silk.
Any feedback!?

Change the ATF. Your TCC clutch, or some other clutch may be wearing its way out.

 

[Joseph Garcia]

I've had hummer mounts (2) for many yrs and miles, and NEVER any vibration.

Likewise on the H3 motor mounts. I feel NO difference at all from the OEM motor mounts on my truck. I'm totally sold on the H3 motor mounts for the LS motor.

 

[CAA0358]

Got the video of the MetalTek motor mounts.

Pretty sure I have another torque converter taking a crap. Glad I installed the mounts, at least it's let me know I have a problem.

 

[mikez71]

Wasn't the water pump then? Might try driving around with belt removed to rule out all accessories..

 

[CAA0358]

Got the video of the MetalTek motor mounts.

Pretty sure I have another torque converter taking a crap. Glad I installed the mounts, at least it's let me know I have a problem.

Wasn't the water pump then? Might try driving around with belt removed to rule out all accessories..

Not the water pump. I replaced that this weekend. It was under warranty by O'Reilly's. Sobit was just labor.