MA motor mounts and Transfer case brace = driveline vibration felt now??

kubitza123

kubitza123

New member
Sep 19, 2016
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Texas
Ok guys when I did some work on my CCLB 4x4 2004 GMC I added a T-case brace and MA engine mounts.

Now of course more engine vibration you can feel due to the engine mounts being so much more rigid.

My question is before I never had a vibration in the truck going down the road 65-80mph+ .

I'm thinking since I have such a long ass two piece driveline I'm now feeling it since the engine mounts are so rigid and T-case brace probably added to that as well .

Anyone else done this and experienced the same? Wondering if just buying the single piece aluminum drive would solve my issue?
 
WVRigrat05

WVRigrat05

Wound for sound
Jan 1, 2011
3,081
4
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36
French Creek, West Virginia
Those stiff mounts help find the other weak links. My vibration ended up being a worn out slip yoke and a ripped trans mount. My truck was a short bed so I would check your carrier bearing first.
 
kubitza123

kubitza123

New member
Sep 19, 2016
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Texas
Carrier bearing brand new from GM and all u joints etc like new. Truck only has 135k original TX miles and like new.
 
WVRigrat05

WVRigrat05

Wound for sound
Jan 1, 2011
3,081
4
38
36
French Creek, West Virginia
What part of Texas miles? I never beat a vehicle so hard in my life as the jeep I drove in Houston, I know for a fact the motor mounts busted, pretty sure an axle was ready to go to, lol.
 
kubitza123

kubitza123

New member
Sep 19, 2016
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Texas
Yes, I just had it out when I had the trans out so no doubt they are good. Main reason I was curious if I'm just feeling it now due to everything being mounted more rigid. I'm in central Tx. Trucks no driven hard or down rough roads fast etc . I take care of my stuff. Tires are less than a year old and just balanced them to rule them out.
 
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