One problem related to dashboard failed has been reported for the 1999 Buick Regal. The most recently reported issues are listed below.
Dashboard cluster stopped diplaying any info. No speedometer, gas gauge, oil, tep or odometer. Display returned when private mechanic began disassemblu. Stopped. Display failed again in one week. Gm dealer said cluster was bad and replaced it. Later said they rebuilt it? failed again in two days. At dealer. I have my doubts that the cluster was bad at all although there are hundreds of online sites offering to sell and/or install new gm clusters.