Coco, that mileage might be low for the age of the car, but in absolute terms, GM cars from the 90's don't get much more than that.
I had an Oldsmobile in the 90s that got 130,000 miles until it died spectacularly, leaving me stranded with a small child, and that was after babying the transmission with frequent flushes starting at 110,000.
But, then, GM wanted you to buy a new car as soon as your car was paid off 5 years later. Planned obsolescence and all that.
Until imports started lasting at least 200,000 miles and were much more dependable. Then, they had to rethink their strategy.