I have owned 12 gmt400 trucks in the past 15 years. Only one has gone to the boneyard,98 Tahoe got rear ended and totaled.a 97 1500 was purchased as a parts truck and parted out when I was done with it. They are rugged machines and can take a lickin. Most maintenance and r&r tasks are not that difficult and parts are usually plentiful and affordable. Hence the reason I currently have 4 in the fleet. The most expensive repair I have HAD to do was a fuel pump. The most I have ever paid for one was $3000 and it was in good shape(was a family friend, could have easily sold it for $5k at the time). I'm restoring a 98 suburban now, about $7500 into it, probably another $1k and paint and it's a brand new truck, (better than when it rolled of the line in my opinion)
That said, I sold my friend on getting a 99 burban a few years ago, 150k, couple rust spots on the sheet metal, straight clean frame, no leaks, drove and shifted well. Interior was smelly and a bit crusty, but a good truck in my opinion. I think it was $3000ish, which I thought was fair, so we picked it up. Figured with $3-5k he could have a almost new truck.Did the usual full tune up, fluids, started cleaning up the inside. Overheated a few months in, replaced intake gaskets and spider assembly along with all the rotating accessories on the front of the motor while we had it apart. did a 0411 pcm and electric fan swap at the same time. Ran great for a few weeks, then the motor started knocking. Never saw coolant in the oil, but something happened to them bearings...put the motor I pulled from the 97 in it. New gaskets, bearings, oil pump, sensors, whole shabang. Ran great for a few weeks, started shifting funny.ordered trans solenoids and a filter. It blew off a heater hose and overheated last weekend, he's done with it... some things are just not predictable. I feel bad for having prodded him along when he ended up with a headachemobile. but since I have never gotten a lemon/gremlin infested truck, my opinion is biased for sure.(knocking on wood)