99 yukon.

[LARRY M VANDIVIER]

Can you put a 5.3 in a 99 yukon that has a 5.7
an is their any changes need to be made for the swap.
an 4x4 diff is leaking what would that be.

 

[bigdog9191999]

can it be done, yes. but it is not a direct bolt in affair. and would need a custom harness and probably tune to work correctly.

the diff could be axle seals, leaky cover, or pinion seal.