I have a 1997 sierra z71 xcab, will the seats from a 2000 z71 xcab fit? front and rear seats

 

It depends on if the 2000 has the classic body or the newer body on it. 1988-1999 are all the same. Some of the 2000 models have the classic body style depending on when they were made. If it was out of a classic body it will work.

 

will the 2002 tahoe seats fit in the 05 suburban ?

 

They will, but the electrical connections will be different if they're the front seats