"I've only been driving the truck a short while so I cannot yet speak to the make/models longevity, but we were impressed by the cleanliness and obvious care given to this truck by the former owner.
It rides well, feels solid and secure. It is quiet, little road noise, no squeaks or rattles.
I LOVE the 3rd door (for the extended cab portion) which makes loading and unloading so much easier than squeezing behind a slid-forward and flipped up front seat. It's only got one jump seat, but that's okay, we hardly ever use those and when we have, it's only one at a time.
My only disappointment so far is that the environment control developed a vacuum leak in the air flow control switch which kills that control and makes the engine run rough at idle. But I have ordered the part and can fix that myself. The air conditioner quit working too, but I suspect that is part of this other failure.
Overall I am pleased with the GMC Sonoma and feel it will suit our needs well for many more years."