Front differential mounts

[Glisella]

Went to replace bushings in the mounts of my 08 Yukon XL Denali, after messing with the bushing for 5 minutes in 90 degree heat and seeing the rust on the mounts I said no, and placed order through RockAuto for both new mounts with bushings to be delivered tomorrow. Ground was $7 and overnight was $16. Will update once I get new mounts in. There are the original mounts with 225K miles on them. I had developed a clunk and after recently replacing all front suspension items I figured I'd do these next. Will see if it solves it and if not...at least I have new mounts lol.

 

[Glisella]

One more post - while top of mind and tools still out:

Nuts holding passenger side of diff to mount: 21mm

Bolts holding differential to driver side mount: 18mm

Both sides mount bolt heads: 18mm
Both sides Differential mount nuts: 16mm

 

[gooffeyguy]

How hard of a job/how long did it take to get the mounts out?

How much were the new mounts?

Sent from my SM-G930V using Tapatalk

 

[Glisella]

How hard of a job/how long did it take to get the mounts out?

How much were the new mounts?

Sent from my SM-G930V using Tapatalk

Overall 1.5 hours to remove.

Hardest part was getting my 16mm flex head ratchet wrench onto the four bolt heads holding the mounts in. The front passenger side I went through opening hear wheel well, front driver side I went down through engine bay, it's beneath steering shaft. Other two back bolts I was able to get at fr beneath vehicle. Maybe a socket and ratchet would be easier, I shockingly just found out I don't have one that size.

Both mounts were same price, $75.79 for AC Delco and then I got 5% off that. Part numbers are 23104736 for the driver side and 23104735 for passenger side. Again, these are for AWD on 08 Yukon XL Denali.

 

[ls1frc]

Did it fix your clunk?

 

[Doubeleive]

one of mine on my 2012 Denali had pretty much disintegrated the rubber just crumbled away

 

[Glisella]

Did it fix your clunk?

New parts won't arrive until today. Will let you know.

 

[Glisella]

one of mine on my 2012 Denali had pretty much disintegrated the rubber just crumbled away

That's the way two of my bushings were. The rear driver side and front passenger side.

 

[ls1frc]

New parts won't arrive until today. Will let you know.

Great. I've had a clunk since I got the truck with 105k on it coming to a stop. Replaced motor mounts and didn't fix it. Hoping it's this.

 

[Joseph Garcia]

I recently replaced my front differential mounts, due to a clunk that I could not get rid of, even after I replaced the slip yoke. The clunk disappeared after replacing the mounts and bushings, and I'm confident that you will achieve the same result.

There is my thread on the topic:

https://www.tahoeyukonforum.com/thr...-not-the-drive-shaft-slip-yoke-solved.119545/