[brew_let]

I was wondering how long a 1999 Silverado would last with the original motor and transmission. I have 1989 Silverado and that I bought about 7 months ago it has a engine and transmission that is about 20k old and it runs fine. I am looking into upgrading to a 1999 Silverado 1500 Z71, and I was wondering if I bought one with from 90k miles to 110k miles how long before I would start to see mechanical troubles.