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Message
Motor Mounts for GM Truck
Posted on 8/23/16 at 12:32 pm
Posted on 8/23/16 at 12:32 pm
I have a 2010 Yukon Denali and I notice a very slight vibration at idle at times. The same issue on my previous vehicle (2004 GMC Envoy) was resolved by changing the motor mounts, since the rubber on the old ones had completely deteriorated and did not absorb vibrations anymore. That one was much worse than the slight vibration I'm feeling now but I'd like to nip this thing in the bud.
So are there any places that make a polyurethane replacement that will simply drop into my truck so I won't have to do this again in the near future? I can't seem to find a straight answer looking at other forums online so I figured I'd come to ask the OB faithful. I'd prefer to find an aftermarket improvement but if I have to buy an OEM replacement for the best lifespan, I can pony up the cash.
TIA.
So are there any places that make a polyurethane replacement that will simply drop into my truck so I won't have to do this again in the near future? I can't seem to find a straight answer looking at other forums online so I figured I'd come to ask the OB faithful. I'd prefer to find an aftermarket improvement but if I have to buy an OEM replacement for the best lifespan, I can pony up the cash.
TIA.
3
Posted on 8/23/16 at 12:36 pm to bapple
quote:you do not want that. You will get every motor vibration into the cabin if you do this.
polyurethane replacement
Posted on 8/23/16 at 12:43 pm to bapple
Go with OEM. How are you going through motor mounts that fast?
Posted on 8/23/16 at 12:45 pm to Hammertime
quote:
you do not want that. You will get every motor vibration into the cabin if you do this.
Good to know. Thanks for the heads up.
quote:
How are you going through motor mounts that fast?
106k miles on the clock. I'm sure they're not completely shot yet so it may not be an immediate replacement. But I'd prefer to swap them out before the vibration feels too harsh.
I can already feel that little slam from the transmission mount when I accelerate quickly from idle so I imagine that one is already dry rotted and done. But that's a much easier swap than a motor mount.
Posted on 8/23/16 at 1:03 pm to bapple
they all have a problem with motor mounts starting in 07.
Usually the drivers side mount rips apart.
Usually the drivers side mount rips apart.
Posted on 8/23/16 at 1:17 pm to meauxjeaux2
Would you advise changing them in pairs? Seems pointless to just change one. And is the part number the same for both sides?
Thanks for all the info.
Thanks for all the info.
Posted on 8/23/16 at 1:20 pm to bapple
yes and no. Change them both and different part numbers. Is it 2 or 4wd?
Posted on 8/23/16 at 1:37 pm to meauxjeaux2
quote:
Is it 2 or 4wd?
AWD. I've seen differing opinions on whether I should drop the differential out or unbolt the CV shafts to get to the mounts. Same thing with the wheel well liners.
Posted on 8/23/16 at 1:48 pm to bapple
i've changed them without doing any of that. I disassemble the drivers side mount then once it's in there i bolt it back together.
Where you at man
Where you at man
Posted on 8/23/16 at 2:04 pm to meauxjeaux2
quote:
Where you at man
BR
email me. _______________
This post was edited on 8/23/16 at 3:33 pm
Posted on 8/23/16 at 2:36 pm to bapple
quote:Man, that was a long time ago
aim.com
Posted on 8/23/16 at 2:40 pm to Hammertime
I've had it a long time and it's not exactly my primary email address. Good thing, because it gets about 200 junk emails a day.
Posted on 8/23/16 at 6:49 pm to bapple
The Denali has had terrible problems with struts, especially on the right front. You can not hear it unless you go really slow and usually the mechanic will take forever to hear it but it is annoying. The dealer can add the part to repair it for you but it will cost you. Thus, I know a guy that was trying to start a class action deal to get it warrantied. I think they have finally gotten it to court and should be settled soon. Call your dealer and ask about TSB on the diaphram replacement in Denali struts.
Posted on 8/23/16 at 8:59 pm to Sparetime
I'm assuming this is for the air ride suspension? I have never felt the suspension was too hard or too soft but this is good information to know if I should keep an eye on it.
Posted on 8/23/16 at 11:12 pm to bapple
They all have air ride which mainly is the rear bag springs. The front struts are built just like a yukon except they have cushion in the top of the strut by the mount. The problem is the strut mount is not built correctly and will wear the dampner at the top. GM has released a bulletin on it and recommends letting them add an additional dampner at your cost, so many cases started popping up this is turning into a lemon design that they will have to pay for perpetually.
Posted on 8/23/16 at 11:16 pm to bapple
And a simple vibration only at an idle is not a motor mount problem. The amount of miles you have should not have motor mount issues anyway. If you have the lighter motor package (5.3L) probably the valve bearings going out like all of them. Get mechanic to put scanner on it and see how many random misfires you are having on it.
Posted on 8/24/16 at 6:47 am to Sparetime
quote:
If you have the lighter motor package (5.3L)
All 07-14 Denalis have the L94 (6.2L).
quote:
Get mechanic to put scanner on it and see how many random misfires you are having on it.
I'm not throwing a code or anything and the engine is still a beast so I doubt this is an issue. But I'm gonna get it looked at on Friday.
Thanks for the info about the front right strut. I'll be sure to get that checked out too.
Posted on 8/24/16 at 9:18 pm to bapple
Vibration at idle is hard to nail down. Blower motor going out, belt, tensioner pulley, fans or fan clutch, etc.
Good luck.
Good luck.
Posted on 8/26/16 at 7:51 pm to bapple
As expected. Broken drivers side engine mount. Nice meeting you today Bap
Posted on 8/26/16 at 8:01 pm to meauxjeaux2
That's crazy. I guess they changed suppliers in 07. Is the material noticeably different?
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