I've owned a 94, 98, and 99 Tahoe, all of which have been exceptional vehicles. My 99 currently has 174k, looks great, sounds great, and has been very reliable. It might be slightly more expensive on gas than most vehicles, but the cheap maintenance more than makes up for it. At 140k I replaced the mechanism that opens the driver-side door. It was an easy fix and I was able to do it on my own in about 20 minutes. At 150k I had to replace the fuel pump. From what I understand this is a fairly common fix. Be sure to replace it with a GM factory fuel pump. 174k and only $800 spent on nonroutine
maintenance! Looking forward to many years on the road!