when did buick upgrade digital dash?

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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.