One problem related to battery has been reported for the 1998 Buick Regal. The most recently reported issues are listed below.
Not sure of the problem w/ my 98 Buick Regal GS. It has 59,000 miles on it, and has been in the shop for the past 10 months on a regular basis. Have replaced spark plugs, battery, and am now on the 3rd new fuel pump. Put over $5,000 into this car. No previous history of problems. I am original owner. It has completely cut off in the middle of driving and has left me stranded 6 times, 3 of those with my 4 year old. These problems started on easter, 2004 and are still continuing to date.