Has anyone replaced mouting bushings on their front differental or transfer cases?

[Mr T]

Folks:

As posted on another thread, I replaced left front axle and hub assembly on my 2008 Denali over the weekend. I noticed, when removing the axle nut, that I was able to get a fair amount of differential movement (up and down) if/when I rocked the axle. I eventually froze the hub assembly with a breaker bar between lug nuts and the ground. However, that movement made me think my 175K miles may have hammered the mounts to the differential. I've replaced engine mounts already and I do hear a slight "thud" when I disengage the trans (let off the gas a certain speeds). My thought is I probably need to replace any mounting bushings on transmission as well as differential and transfer case.

Sorry for the long post but here is my succinct question: Are there mounting bushings for all of the following and if so, has anyone replaced them?
1) Transmission
2) Front differential
3) Transfer case

 

[swathdiver]

Folks:

As posted on another thread, I replaced left front axle and hub assembly on my 2008 Denali over the weekend. I noticed, when removing the axle nut, that I was able to get a fair amount of differential movement (up and down) if/when I rocked the axle. I eventually froze the hub assembly with a breaker bar between lug nuts and the ground. However, that movement made me think my 175K miles may have hammered the mounts to the differential. I've replaced engine mounts already and I do hear a slight "thud" when I disengage the trans (let off the gas a certain speeds). My thought is I probably need to replace any mounting bushings on transmission as well as differential and transfer case.

Sorry for the long post but here is my succinct question: Are there mounting bushings for all of the following and if so, has anyone replaced them?
1) Transmission
2) Front differential
3) Transfer case

I have not done them but this fella might have: @randeez

 

[randeez]

Dunno about the bushings themselves, the whole brackets are about 90$/each iirc. Priced them out while hunting down vibrations never replaced them tho

GM 23104736
Part# - 23104735

Were the part #s I found

 

[Warriorpluto]

I've replaced both sides. Both new brackets with bushings. Didn't cure my shift intro reverse clunk nor did it stop the front differential from lurching when shifting into reverse. Where is the transfer case bushing located?