2000 gmc rear end

Rear end will swap in as long as it's a disc brake 6 lug. But you need to check to see if the gear ratio is the same or your speedo will be off
 
There is no differance between the 2 trucks if they came with the same package.

now if ones a work truck and ones a LTZ then there can be a difference in the gears or something, but generally, you could get 2 trucks exactly the same just one having a 4.8 and one having a 5.3
 
No it won't fit because the Tahoe rearend has 5 link brackets and coil spring pockets, not leaf spring perches for your truck
 
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