Clunk on hard acceleration

[broken08]

105k on Yukon XL Denali. When I hit the gas even mildly hard there is not really a noise but a feeling of nothing, nothing, nothing WHACK. Like a delay after I hit the gas then a hard catch.
I'm fearing motor mounts, or maybe something worse?

 

[NathanJax]

motor mounts are a common problem.

 

[justinesky]

Motor mount. just changed mine yesterday. took about an hour 30

 

[ISU-152]

Check u joints as well m8

 

[DRG]

I just changed engine mounts and the clunk went away. Right side is more difficult. Manual says to remove exhaust manifold and disconnect coolant hoses. I did not do that. I did remove exhaust manifold heat shield and AC compressor + compressor bracket for better access. I found the most difficult part was getting the bolts started into the engine block.