when did buick upgrade digital dash?

hi, title pretty much says it all. i'm hoping some one can tell me when or if buick revised, upgraded or addressed issues with the digital dash. my mom has a 92 buick which has been agreat car but always had problems with the digital dash, repaire several times & replaced. it is time for her to get a newer car & she really wants another buick. they are hard to find without adigital dash & she needs a car. i've been looking for awhile & only found one without digital, it sold before i could get to it. if someone knows when the digitals recieved improvements it would really be appriciated. mom says thanks.