Rear windows

Over the last couple of months both rear windows went out at different times. Took to the dealer and they replaced both motors and regulators. Covered by warranty. Just wondering if this is a common problem with 2000 Tahoes?

?, but when I bought my 2000 Tahoe, I did notice that my rear passenger side window motor had been replaced, because it rolls up & down fast-real fast-faster than all the rest.